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Huang W, Yu Y, Wang D, Ma H, Wang G. Zn 2SnO 4@Ti ceramic film anode preparation by microarc oxidation for 2e - WOR degradation of unsymmetrical dimethylhydrazine (UDMH). J Environ Manage 2024; 356:120724. [PMID: 38527385 DOI: 10.1016/j.jenvman.2024.120724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/03/2024] [Accepted: 03/19/2024] [Indexed: 03/27/2024]
Abstract
The main challenge facing the anodic electro-Fenton through the 2e- water oxidation reaction (WOR) for toxics degradation lies in the electrode's stability, because the anodic oxygen evolution (OER) generated O2 will inevitably exfoliate the electro-active components loaded on the electrode substrate. To address this point, two aspects need attention: 1) Identifying a catalyst that exhibits both excellent electrocatalytic activity and selectivity can improve the faradaic efficiency of hydrogen peroxide (H2O2); 2) Employing novel methods for fabricating highly stable electrodes, where active sites can be firmly coated. Consequently, this study utilized microarc oxidation (MAO) to prepare a ceramic film electrode Zn2SnO4@Ti at 300 V. Zn2SnO4 acts as an WOR electrocatalyst and further improved the generation of H2O2 for treating real wastewater containing Unsymmetrical Dimethylhydrazine (UDMH). From the perspective of characterization of electrode structure, Zn2SnO4@Ti forms a stable active coating, the electrochemical yield of H2O2 is high up to 78.4 μmol h-1 cm-2, and the selectivity of H2O2 is over 80% at 3.3 V vs. RHE, which can be fully applied to scenarios where it is inconvenient to transport H2O2 and need in-situ safe production. Additionally, the prepared electrodes exhibit significant stability, suitable for various applications, providing insightful preparation strategies and experiences for constructing highly stable anodes.
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Affiliation(s)
- Wenxuan Huang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian, 116034, PR China
| | - Yuanyuan Yu
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian, 116034, PR China
| | - Dong Wang
- College of Marine Science-Technology and Environment, Dalian Ocean University, No. 52 Heishijiao, Shahekou District, Dalian, 116023, PR China
| | - Hongchao Ma
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian, 116034, PR China.
| | - Guowen Wang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjinzi District, Dalian, 116034, PR China.
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Liu Y, Chen C, Liang T, Wang Y, Zhao R, Li G, Bai C, Wu Y, Yu F, Sheng L, Zhang R, Zhao Y. In vitro long-term antibacterial performance and mechanism of Zn-doped micro-arc oxidation coatings. Colloids Surf B Biointerfaces 2024; 233:113634. [PMID: 37956591 DOI: 10.1016/j.colsurfb.2023.113634] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/16/2023] [Accepted: 11/05/2023] [Indexed: 11/15/2023]
Abstract
Micro-arc oxidation (MAO) coatings containing 2.86 wt%, 5.83 wt% and 8.81 wt% Zn (Zn-2.86 wt%, Zn-5.83 wt% and Zn-8.81 wt%) were separately fabricated on Ti6Al4V alloys using EDTA-ZnNa2 electrolytes. In vitro antibacterial examination exhibits that the antibacterial rates of Zn-2.86 wt%, Zn-5.83 wt% and Zn-8.81 wt% against Staphylococcus aureus (S. aureus) are 76.0 %, 100.0 % and 99.2 %, respectively. Reactive oxygen species (ROS) level of MAO samples is significantly higher than that of the untreated Ti6Al4V. Zn-containing coatings especially Zn-5.83 wt% induces the strongest oxidative stress on S. aureus due to relatively high released Zn2+ concentration. Moreover, qPCR analysis shows that MAO samples inhibit the icaADBC transcription and result in the down-regulation of PIA production, thereby mitigating biofilm formation. After immersion in simulated body fluid (SBF) for 3, 8 and 14 d, the antibacterial rate of Zn-5.83 wt% is 84.7 %, 63.2 % and 12.5 % respectively, and ROS level of MAO samples is also significantly higher than that of the untreated Ti6Al4V even after 14 d of immersion, suggesting that the antibacterial performance of MAO samples can last a relatively long immersion period and exhibit large application potential in orthopedic clinic.
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Affiliation(s)
- Yuzhi Liu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Changtian Chen
- School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Tao Liang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yaping Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Rongfang Zhao
- School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Guoqiang Li
- School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Chunguang Bai
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
| | - Yuxi Wu
- Key Laboratory of Metallurgical Emission Reduction & Resources Recycling (Anhui University of Technology), Ministry of Education, Maanshan 243002, China
| | - Fanglei Yu
- Zhejiang Canwell Medical Co., Ltd, Jinhua 321000, China
| | - Liyuan Sheng
- Shenzhen Institute, Peking University, Shenzhen 518057, China
| | - Rongfa Zhang
- School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China.
| | - Ying Zhao
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
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Fan X, Du J, Li Y, Duan K, Liu G. Electrophoretic deposition of magnesium oxide coating on micro-arc oxidized titanium for antibacterial activity and biocompatibility. J Orthop Surg Res 2023; 18:901. [PMID: 38012792 PMCID: PMC10680288 DOI: 10.1186/s13018-023-04390-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/18/2023] [Indexed: 11/29/2023] Open
Abstract
Titanium (Ti) dental implants face risks of early failure due to bacterial adhesion and biofilm formation. It is thus necessary to endow the implant surface with antibacterial ability. In this study, magnesium oxide (MgO) coatings were prepared on Ti by combining micro-arc oxidation (MAO) and electrophoretic deposition (EPD). The MgO nanoparticles homogeneously deposited on the microporous surface of MAO-treated Ti, yielding increasing coverage with the EPD time increased to 15 to 60 s. After co-culture with Porphyromonas gingivalis (P. gingivalis) for 24 h, 48 h, and 72 h, the coatings produced antibacterial rates of 4-53 %, 27-71 %, and 39-79 %, respectively, in a dose-dependent manner. Overall, EPD for 45 s offered satisfactory comprehensive performance, with an antibacterial rate 79 % at 72 h and a relative cell viability 85 % at 5 d. Electron and fluorescence microscopies revealed that, both the density of adherent bacterial adhesion on the surface and the proportion of viable bacteria decreased with the EPD time. The morphology of cells on the surface of each group was intact and there was no significant difference among the groups. These results show that, the MgO coating deposited on MAO-treated Ti by EPD had reasonably good in vitro antibacterial properties and cytocompatibility.
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Affiliation(s)
- Xinli Fan
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Cheeloo College of Medicine, No.44-1 Wenhua Road West, Jinan, 250012, Shandong, China
| | - Jiaheng Du
- Sichuan Provincial Laboratory of Orthopaedic Engineering, Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, 25 Taiping Rd, Luzhou, 646000, Sichuan, China
| | - Yaohua Li
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Cheeloo College of Medicine, No.44-1 Wenhua Road West, Jinan, 250012, Shandong, China
| | - Ke Duan
- Sichuan Provincial Laboratory of Orthopaedic Engineering, Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, 25 Taiping Rd, Luzhou, 646000, Sichuan, China.
| | - Gangli Liu
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Cheeloo College of Medicine, No.44-1 Wenhua Road West, Jinan, 250012, Shandong, China.
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Semenov A, Pecherskaya E, Golubkov P, Gurin S, Artamonov D, Shepeleva Y. Parametric identification of the mathematical model of the micro-arc oxidation process. Heliyon 2023; 9:e19995. [PMID: 37810131 PMCID: PMC10559672 DOI: 10.1016/j.heliyon.2023.e19995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 05/01/2023] [Accepted: 09/07/2023] [Indexed: 10/10/2023] Open
Abstract
The article is aimed at solving the problem of parametric identification of non-linear object models using the example of a mathematical model of the micro-arc oxidation process. An algorithm for parametric identification, based on an experiment in the micro-arc oxidation process, the results of which form a training and control sample is proposed; sequential training of neural networks and calculation of the parameters estimates of the nonlinear model according to experimental data are performed. Experimental testing of the proposed method of neural network parametric identification on the example of the micro-arc oxidation process confirmed that the standard deviation of current and voltage from the nominal values does not exceed ±4%. The obtained results were used in the development of an intelligent hardware-software complex for the production of protective coatings by the micro-arc oxidation method.
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Affiliation(s)
- Anatoliy Semenov
- Department of Information and Measurement Equipment and Metrology, Penza State University, Krasnaya Street 40, Penza 440026, Russia
| | - Ekaterina Pecherskaya
- Department of Information and Measurement Equipment and Metrology, Penza State University, Krasnaya Street 40, Penza 440026, Russia
| | - Pavel Golubkov
- Department of Information and Measurement Equipment and Metrology, Penza State University, Krasnaya Street 40, Penza 440026, Russia
| | - Sergey Gurin
- Department of Information and Measurement Equipment and Metrology, Penza State University, Krasnaya Street 40, Penza 440026, Russia
| | - Dmitriy Artamonov
- Polytechnic Institute, Penza State University, Krasnaya Street 40, Penza 440026, Russia
| | - Yuliya Shepeleva
- Polytechnic Institute, Penza State University, Krasnaya Street 40, Penza 440026, Russia
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Dong J, Zhong J, Hou R, Hu X, Chen Y, Weng H, Zhang Z, Liu B, Yang S, Peng Z. Polymer bilayer-Micro arc oxidation surface coating on pure magnesium for bone implantation. J Orthop Translat 2023; 40:27-36. [PMID: 37274179 PMCID: PMC10232471 DOI: 10.1016/j.jot.2023.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 05/03/2023] [Accepted: 05/03/2023] [Indexed: 06/06/2023] Open
Abstract
Background Pure magnesium-based ortho-implants have a number of advantages. However, vital parameters like degradation rate and biocompatibility still call for significant improvement. Methods In this study, poly (1,3-trimethylene carbonate) (PTMC) and polydopamine (PDA) bilayer and micro arc oxidation composite coatings were prepared successively on magnesium surface by immersion method and microarc oxidation. Its corrosion resistance and biocompatibility were evaluated by in vitro corrosion tests, cellular compatibility experiments, and in vivo animal experiments. Results In vitro experiments demonstrated that the composite coating provides excellent corrosion protection and biocompatibility. Animal studies demonstrated that the composite coating slowed the degradation of the implant and was not toxic to animal viscera. Conclusion In conclusion, the inorganic-organic composite coating proposed in this study provided good corrosion resistance and enhanced biocompatibility for pure magnesium implants. The translational potential of this article The translational potential of this article is to develop an anti-corrosion composite coating on a pure magnesium surface and to verify the viability of its use in animal models. It is hoped to open up a new approach to the design of new degradable orthopedic magnesium-based implants.
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Affiliation(s)
- Jieyang Dong
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Jiaqi Zhong
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Ruixia Hou
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Xiaodong Hu
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Yujiong Chen
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Hangbin Weng
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Zhewei Zhang
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Botao Liu
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Shengbing Yang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200240, China
| | - Zhaoxiang Peng
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
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Askarnia R, Sobhani M, Zare M, Aghamohammadi H, Staji H. Incorporation of Al 2O 3 and ZrO 2 ceramics to AZ31 magnesium alloys composite coating using micro-arc oxidation method. J Mech Behav Biomed Mater 2023; 141:105784. [PMID: 36934686 DOI: 10.1016/j.jmbbm.2023.105784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 03/16/2023]
Abstract
In this research, a composite coating with Al2O3 and ZrO2 particles have been applied on AZ31 magnesium alloy by micro-arc oxidation (MAO) technique. The alkaline electrolyte included a constant based composition and different composition of the Al2O3 and ZrO2 additives. Microstructure observations reveal that the surface pores of composite coating reduced during addition of ZrO2 and Al2O3 ceramic particles. The hardness of coating increased from about 380 for non-added to 620 MPa for Al2O3+ZrO2 added coating and wear rate reduced about 8 times. Wettability of the coating increased by incorporation of Al2O3 and/or ZrO2 particles while, Al2O3 is more effective than ZrO2. Addition of the ceramic particles enhanced the hydrophilicity properties of surface in wettability test and a contact angle of 43° was obtained for coating including Al2O3+ZrO2. The antibacterial properties of MAO coatings showed that S. aureus bacterium is more sensitive to the zirconia and alumina particle than S. typhimurium bacterium after 24 h of incubation.
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Affiliation(s)
- R Askarnia
- Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran
| | - M Sobhani
- Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran.
| | - M Zare
- Department of Materials Engineering, Isfahan University of Technology, Iran
| | - H Aghamohammadi
- Department of Materials Engineering, Babol Noshirvani University of Technology, Babol, Iran
| | - H Staji
- Department of Veterinary Medicine, Semnan University, Semnan, Iran
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Ding M, Shi J, Wang W, Li D, Tian L. Early osseointegration of micro-arc oxidation coated titanium alloy implants containing Ag: a histomorphometric study. BMC Oral Health 2022; 22:628. [PMID: 36550526 PMCID: PMC9783399 DOI: 10.1186/s12903-022-02673-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND This study aimed to evaluate bone response to micro-arc oxidation coated titanium alloy implants containing Ag. METHODS 144 titanium alloy implants were prepared by machine grinding and divided into three treatment groups as following, SLA group: sand-blasting and acid-etched coating; MAO group: micro-arc oxidation without Ag coating; MAO + Ag group: micro-arc oxidation containing Ag coating. Surface characterization of three kind of implants were observed by X-ray diffraction, energy dispersive X-ray spectrometer, scanning electron microscopy, High Resolution Transmission Electron Microscope and roughness analysis. The implants were inserted into dog femurs. 4, 8 and 12 weeks after operation, the bone response to the implant to the bone was evaluated by push-out experiment, histological and fluorescent labeling analysis. RESULTS MAO + Ag group consisted of a mixture of anatase and rutile. Ag was found in the form of Ag2O on the surface. The surface morphology of MAO + Ag group seemed more like a circular crater with upheaved edges and holes than the other two groups. The surface roughness of MAO and MAO + Ag groups were higher than SLA group, but no statistical difference between MAO and MAO + Ag groups. The contact angles in MAO + Ag group was smallest and the surface free energy was the highest among three groups. The maximum push-out strength of MAO and MAO + Ag groups were higher than SLA group at all time point, the value of MAO + Ag group was higher than MAO group at 4 and 8 weeks. Scanning electron microscopy examination for the surface and cross-section of the bone segments and fluorescent labeling analysis showed that the ability of bone formation and osseointegration in MAO + Ag group was higher than that of the other two groups. CONCLUSION The micro-arc oxidation combination with Ag coating is an excellent surface modification technique to posse porous surface structure and hydrophilicity on the titanium alloy implants surface and exhibits desirable ability of osseointegration.
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Affiliation(s)
- Mingchao Ding
- grid.233520.50000 0004 1761 4404State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No. 145 Changle Xi Road, Xi’an, 710032 People’s Republic of China
| | - Jin Shi
- grid.233520.50000 0004 1761 4404State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No. 145 Changle Xi Road, Xi’an, 710032 People’s Republic of China
| | - Weiqi Wang
- grid.233520.50000 0004 1761 4404State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No. 145 Changle Xi Road, Xi’an, 710032 People’s Republic of China
| | - Dechao Li
- grid.410645.20000 0001 0455 0905Qingdao Stomatological Hospital Affiliated to Qingdao University, No. 17 Dexian Road, Shinan District, Qingdao, 266001 Shandong Province People’s Republic of China
| | - Lei Tian
- grid.233520.50000 0004 1761 4404State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No. 145 Changle Xi Road, Xi’an, 710032 People’s Republic of China
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Wu Y, Zhu B, Zhang X, Li D, Zhang K, Liang J, Cao B. Preparation and characterization of Y-doped microarc oxidation coating on AZ31 magnesium alloys. J Biomater Appl 2022; 37:930-941. [PMID: 35971286 DOI: 10.1177/08853282221121886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The rapid degradation characteristics of magnesium alloys limit its application in the field of orthopedic fracture fixation and cardiovascular stents. This study aimed to improve the corrosion resistance and biocompatibility of AZ31 magnesium alloys and prepare degradable implant materials. Micro-arc oxidation (MAO) was used to change the concentration of yttrium acetate in the electrolyte to prepare coatings with different yttrium content on the surface of AZ31 magnesium alloy. Through characterization, it is proved that the yttrium in the coating mainly exists in the form of Y3+. The polarization potential experiment shows that the micro-arc oxidation coating significantly improves the corrosion resistance of magnesium alloys. With the increase of yttrium acetate concentration in the electrolyte, the corrosion resistance of the coating first increases and then weakens. When the concentration is 0.0035 mol/L, the coating has the highest corrosion resistance. The results of CCK-8 cytotoxicity experiment and cell morphology observation also proved that the cell viability in each group was greater than 140%, and the yttrium-doped coating on the surface of AZ31 magnesium alloy has no cytotoxicity, can promote cell growth, and has good biocompatibility.
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Affiliation(s)
| | - Bowu Zhu
- 12426Lanzhou University, Lanzhou, China
| | | | - Duhong Li
- 12426Lanzhou University, Lanzhou, China
| | | | - Jun Liang
- 53045Chinese Academy of Sciences Lanzhou Branch, Lanzhou, China
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Liu Y, Cheng X, Wang X, Sun Q, Wang C, Di P, Lin Y. Micro-arc oxidation-assisted sol-gel preparation of calcium metaphosphate coatings on magnesium alloys for bone repair. Mater Sci Eng C Mater Biol Appl 2021; 131:112491. [PMID: 34857277 DOI: 10.1016/j.msec.2021.112491] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/07/2021] [Accepted: 10/10/2021] [Indexed: 10/20/2022]
Abstract
Calcium phosphate coating is an attractive surface modification strategy for magnesium alloys, since it can increase their corrosion resistance and endow them with osteogenic function simultaneously. Herein, a calcium metaphosphate (CMP) coating was fabricated on magnesium alloy by using sol-gel approach assisted with micro-arc oxidation pre-treatment. Scanning electron microscopy showed that the micro-pores and cracks in micro-arc oxidation inner layer generated during the pre-treatment process were sealed by the grainy sol-gel outer layer. Energy dispersive spectrometry and X-ray diffraction results demonstrated the identity of the coating as CMP. The cross-cut test showed that the adhesion of CMP coating was strong. Applying bare magnesium alloy substrate as a control, the CMP coating surface was rougher and more hydrophilic. The potentiodynamic polarization test demonstrated that the corrosion resistance was significantly improved by using CMP coating. Hydrogen evolution in immersion test further confirmed that the degradation rate was decelerated within 14 days. Moreover, CMP coating facilitated the adhesion speed, spreading area, and focal adhesion formation of bone marrow stem cells. The number of cells in the active proliferating state and proliferated cells present on the CMP coating also increased. Additionally, CMP coating upregulated alkaline phosphatase activity and osteogenic gene expression in cells. In summary, the micro-arc oxidation assisted sol-gel CMP coatings increased the corrosion resistance and promoted the interfacial cell behavior for magnesium alloy implants, which might inform the further development of surface modifications on magnesium alloys for bone related applications.
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Affiliation(s)
- Yanping Liu
- Department of Oral Implantology, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - Xian Cheng
- Xiangya Hospital Stomatological Hospital, Central South University, Changsha, Hunan 410000, China; Department of Dentistry-Biomaterials, Radboud University Medical Center, Philips van Leydenlaan 25, 6525 EX Nijmegen, the Netherlands
| | - Xiyuan Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Qiu Sun
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Chenxi Wang
- Department of Oral Implantology, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - Ping Di
- Department of Oral Implantology, Peking University School and Hospital of Stomatology, Beijing 100081, China.
| | - Ye Lin
- Department of Oral Implantology, Peking University School and Hospital of Stomatology, Beijing 100081, China.
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10
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Lv Y, Sun S, Zhang X, Lu X, Dong Z. Construction of multi-layered Zn-modified TiO 2 coating by ultrasound-auxiliary micro-arc oxidation: Microstructure and biological property. Mater Sci Eng C Mater Biol Appl 2021; 131:112487. [PMID: 34857273 DOI: 10.1016/j.msec.2021.112487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/24/2021] [Accepted: 10/09/2021] [Indexed: 12/13/2022]
Abstract
Surfaces with desirable cytocompatibility and bactericidal ability are favoured for orthopaedic implants to stimulate osteogenic activity and to prevent implant-associated infection. In this work, we creatively introduce ultrasonic vibration (UV) to micro-arc oxidation (MAO) process and explore its influence on the microstructure, corrosion property and biological responses of Zn-modified TiO2 coating. With the introduction of UV, a uniform surface layer with homogeneously-distributed clusters could be produced as the outer layer, which possesses a fusion band with the underlying TiO2. The microstructural modification associated with UV results in the enhanced corrosion resistance, increased adhesive strength and improved biological performances of the resultant coating relative to that with the absence of UV. Hence, the ultrasonic auxiliary micro-arc oxidation (UMAO) is regarded as a promising surface modification method to produce Ti-based orthopaedic implants of high quality.
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Affiliation(s)
- You Lv
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Hubei Engineering Research Centre for Biomaterials and Medical Protective Materials, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Siqin Sun
- Wuhan Third Hospital, Tongren Hospital of Wuhan University, 216 Guanshan Road, Hongshan District, 430060, PR China
| | - Xinxin Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Hubei Engineering Research Centre for Biomaterials and Medical Protective Materials, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Xueqin Lu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zehua Dong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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11
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Liang DY, Liang PC, Yi QQ, Sha S, Shi JF, Chang Q. Copper coating formed by micro-arc oxidation on pure Mg improved antibacterial activity, osteogenesis, and angiogenesis in vivo and in vitro. Biomed Microdevices 2021; 23:39. [PMID: 34302543 DOI: 10.1007/s10544-021-00573-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2021] [Indexed: 01/14/2023]
Abstract
Micro-arc oxidation (MAO) was used to improve the resistance of pure magnesium (Mg). Copper (Cu), a good antibacterial, angiogenic, and osteogenic element, was added by reaction in a Cu-containing electrolyte to improve the osteogenic and pro-angiogenic activities of Mg. The surface microstructures of the resulting MAO were evaluated by a scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) mapping. The release of Cu ions was detected by ICP-OES. The antibacterial activity of films with different concentrations of Cu ions was assessed against Staphylococcus aureus (S. aureus). The osteogenesis of films was confirmed by cell morphology and proliferation, ALP activity, alizarin red staining, and osteogenic-related gene expression in the MC3T3-E1 cell line. The angiogenesis of the films was tested in human umbilical vein endothelial cells (HUVECs) by cell migration, tube formation, and VEGF quantification in vitro, and by a chicken embryo chorioallantoic membrane (CAM) assay in vivo. The results showed that the microporous structure was shaped by MAO, and the Cu group was denser and more uniform. The Cu coating showed effective antibacterial activity against S. aureus while also enhancing osteogenesis and angiogenesis in vitro. According to the CAM assay, the Cu group showed not only biocompatibility but also a significant angiogenic response, which was consistent with in vitro studies. The findings indicate that a Cu coating on Mg-MAO enhances osteogenesis and angiogenesis.
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Costa AI, Gemini-Piperni S, Alves AC, Costa NA, Checca NR, Leite PE, Rocha LA, Pinto AMP, Toptan F, Rossi AL, Ribeiro AR. TiO 2 bioactive implant surfaces doped with specific amount of Sr modulate mineralization. Mater Sci Eng C Mater Biol Appl 2021; 120:111735. [PMID: 33545878 DOI: 10.1016/j.msec.2020.111735] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 10/30/2020] [Accepted: 11/11/2020] [Indexed: 11/27/2022]
Abstract
One of the main problems that remain in the implant industry is poor osseointegration due to bioinertness of implants. In order to promote bioactivity, calcium (Ca), phosphorus (P) and strontium (Sr) were incorporated into a TiO2 porous layer produced by micro-arc oxidation. Ca and P as bioactive elements are already well reported in the literature, however, the knowledge of the effect of Sr is still limited. In the present work, the effect of various amounts of Sr was evaluated and the morphology, chemical composition and crystal structure of the oxide layer were investigated. Furthermore, in vitro studies were carried out using human osteoblast-like cells. The oxide layer formed showed a triplex structure, where higher incorporation of Sr increased Ca/P ratio, amount of rutile and promoted the formation of SrTiO3 compound. Biological tests revealed that lower concentrations of Sr did not compromise initial cell adhesion neither viability and interestingly improved mineralization. However, higher concentration of Sr (and consequent higher amount of rutile) showed to induce collagen secretion but with compromised mineralization, possibly due to a delayed mineralization process or induced precipitation of deficient hydroxyapatite. Ca-P-TiO2 porous layer with less concentration of Sr seems to be an ideal candidate for bone implants.
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Affiliation(s)
- A I Costa
- CMEMS-UMinho - Center of MicroElectroMechanical Systems, University of Minho, Guimarães, Portugal; DEMM - Department of Metallurgical and Materials Engineering, Faculty of Engineering of the University of Porto, Porto, Portugal.
| | - S Gemini-Piperni
- Postgraduate Program of Translational Biomedicine, University Grande Rio, Duque de Caxias, Brazil; IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil
| | - A C Alves
- CMEMS-UMinho - Center of MicroElectroMechanical Systems, University of Minho, Guimarães, Portugal
| | - N A Costa
- IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil; Postgraduate Program in Materials Science and Technology, São Paulo State University, Bauru, São Paulo, Brazil
| | - N R Checca
- CBPF - Brazilian Centre for Research in Physics, Rio de Janeiro, Brazil
| | - P E Leite
- Directory of Life Sciences Applied Metrology, National Institute of Metrology Quality and Technology, Xérem, Rio de Janeiro, Brazil; Postgraduate Program in Biotechnology, National Institute of Metrology Quality and Technology, Xérem, Rio de Janeiro, Brazil
| | - L A Rocha
- IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil; Faculty of Science, Department of Physics, São Paulo State University, Bauru, São Paulo, Brazil
| | - A M P Pinto
- CMEMS-UMinho - Center of MicroElectroMechanical Systems, University of Minho, Guimarães, Portugal; DEM - Department of Mechanical Engineering, University of Minho, Guimarães, Portugal
| | - F Toptan
- CMEMS-UMinho - Center of MicroElectroMechanical Systems, University of Minho, Guimarães, Portugal; IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil
| | - A L Rossi
- CBPF - Brazilian Centre for Research in Physics, Rio de Janeiro, Brazil
| | - A R Ribeiro
- Postgraduate Program of Translational Biomedicine, University Grande Rio, Duque de Caxias, Brazil; IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil; Postgraduate Program in Biotechnology, National Institute of Metrology Quality and Technology, Xérem, Rio de Janeiro, Brazil
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Saji VS. Superhydrophobic surfaces and coatings by electrochemical anodic oxidation and plasma electrolytic oxidation. Adv Colloid Interface Sci 2020; 283:102245. [PMID: 32858406 DOI: 10.1016/j.cis.2020.102245] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/13/2020] [Accepted: 08/15/2020] [Indexed: 12/20/2022]
Abstract
The review provides a comprehensive account of superhydrophobic surfaces fabricated by electrochemical anodic oxidation (anodization). First, reported works on superhydrophobic polymers and metals made by using anodized metal oxide porous templates as moulds are presented (section 2). The next section provides a detailed description of the different fabrication approaches of superhydrophobic surfaces on anodized metallic substrates (section 3.1). The published information on superhydrophobic anodized surfaces in various applications, viz. anti-corrosion, anti-icing, oil separation, and biomedical are systematically covered (section 3.2). Superhydrophobic surfaces fabricated by plasma electrolytic oxidation are also presented (section 4). Future research perspectives debated. The collective information provided is helpful to further advance R & D in making pioneering superhydrophobic anodized nanoporous surfaces.
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Affiliation(s)
- Viswanathan S Saji
- Center of Research Excellence in Corrosion, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia..
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14
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Zhan X, Li S, Cui Y, Tao A, Wang C, Li H, Zhang L, Yu H, Jiang J, Li C. Comparison of the osteoblastic activity of low elastic modulus Ti-24Nb-4Zr-8Sn alloy and pure titanium modified by physical and chemical methods. Mater Sci Eng C Mater Biol Appl 2020; 113:111018. [PMID: 32487417 DOI: 10.1016/j.msec.2020.111018] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 04/13/2020] [Accepted: 04/24/2020] [Indexed: 02/07/2023]
Abstract
Ti-24Nb-4Zr-8Sn (Ti2448) alloy is a novel low elastic modulus β-titanium alloy without toxic elements. It also has the advantage of high strength, so it has potential application prospects for implantation. To develop its osteogenic effects, it can be modified by electrochemical, and physical processes. The main research aim of this study was to explore the bioactivity of Ti2448 alloy modified by sandblasted, large-grit, acid-etched (SLA), micro-arc oxidation (MAO) and anodic oxidation (AO), and to determine which of the three surface modifications is the best way for developing the osteogenesis of bone marrow mesenchymal stem cells (BMMSCs). In vitro studies, the cytoskeleton, focal adhesion and proliferation of BMMSCs showed that both pure titanium and Ti2448 alloy have good biocompatibility. The osteogenic differentiation of BMMSCs with the Ti2448 alloy were examined by detecting alkaline phosphatase (ALP), mineralization nodules and osteogenic proteins and were better than that with pure titanium. These results showed that the Ti2448 alloy treated by SLA has a better effect on osteogenesis than pure titanium, and AO is the best way of three surface treatments to improve osteogenesis in this study.
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Li CY, Gao L, Fan XL, Zeng RC, Chen DC, Zhi KQ. In vitro degradation and cytocompatibility of a low temperature in-situ grown self-healing Mg-Al LDH coating on MAO-coated magnesium alloy AZ31. Bioact Mater 2020; 5:364-376. [PMID: 32206738 PMCID: PMC7078508 DOI: 10.1016/j.bioactmat.2020.02.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/08/2020] [Accepted: 02/08/2020] [Indexed: 11/26/2022] Open
Abstract
Basically, Mg-Al layered double hydroxide (LDH) coatings are prepared on the surface of micro-arc oxidation (MAO) coated magnesium (Mg) alloys at a high temperature or a low pH value. This scenario leads to the growth rate of LDH coating inferior to the dissolution rate of the MAO coating. This in turn results in limited corrosion resistance of the composite coating. In this study, a Mg-Al LDH coating on MAO-coated Mg alloy AZ31 is prepared through a water bath with a higher pH (13.76) at a lower temperature (60 °C). FE-SEM, EDS, XRD, XPS, and FT-IR are applied to analyze the surface morphology, chemical compositions, and growth process. Electrochemical polarization, electrochemical impedance spectroscopy (EIS) and hydrogen evolution tests are employed to evaluate the corrosion resistance of the samples. The results disclose that the MAO coating is completely covered by the nanosheet-structured LDH coating with a thickness of approximately 3.8 μm. The corrosion current density of the MAO-LDH composite coating is decreased four orders of magnitude in comparison to its substrate; the presence of a wide passivation region in anodic polarization branch demonstrates its strong self-healing ability, indicating the hybrid coating possesses excellent corrosion resistance. The formation mechanism of the LDH coating on the MAO-coated Mg alloy is proposed. Furthermore, the cytocompatibility is assessed via an indirect extraction test for MC3T3-E1 pre-osteoblasts, which indicates an acceptable cytocompatibility of osteoblasts for the composite coating.
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Affiliation(s)
- Chang-Yang Li
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Ling Gao
- Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266555, China
- Key Lab of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266555, China
| | - Xiao-Li Fan
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Rong-Chang Zeng
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China
| | - Dong-Chu Chen
- School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, China
| | - Ke-Qian Zhi
- Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266555, China
- Key Lab of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266555, China
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Shimabukuro M, Tsutsumi Y, Nozaki K, Chen P, Yamada R, Ashida M, Doi H, Nagai A, Hanawa T. Investigation of antibacterial effect of copper introduced titanium surface by electrochemical treatment against facultative anaerobic bacteria. Dent Mater J 2020; 39:639-647. [PMID: 32249235 DOI: 10.4012/dmj.2019-178] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study investigated the efficacy of copper (Cu) as an antibacterial element incorporated on titanium (Ti) surface by electrochemical treatment. Cu was incorporated onto Ti surface by micro-arc oxidation (MAO). A small amount of Cu was incorporated into the oxide layer and was found to be in oxidized states. Cu-incorporated samples exhibited no-harmful effect on the proliferation of osteoblastlike cells. Moreover, the difference in antibacterial property between fresh and incubated samples was evaluated using gram-positive and gram-negative facultative anaerobic bacteria. The specific antibacterial property of Cu incorporated into the Ti surface were confirmed. The antibacterial property prolonged upon immersion in physiological saline for 28 days. In other words, MAO-treated Ti containing Cu in this study is expected to achieve long-term antibacterial property in practical usage.
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Affiliation(s)
- Masaya Shimabukuro
- Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.,Department of Biomaterials, Faculty of Dental Science, Kyushu University
| | - Yusuke Tsutsumi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University.,Research Center for Structural Materials, National Institute for Materials Science (NIMS)
| | - Kosuke Nozaki
- Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Peng Chen
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Risa Yamada
- Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Maki Ashida
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Hisashi Doi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Akiko Nagai
- Department of Anatomy, School of Dentistry, Aichi Gakuin University
| | - Takao Hanawa
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
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17
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Zhang ZQ, Wang L, Zeng MQ, Zeng RC, Kannan MB, Lin CG, Zheng YF. Biodegradation behavior of micro-arc oxidation coating on magnesium alloy-from a protein perspective. Bioact Mater 2020; 5:398-409. [PMID: 32258829 DOI: 10.1016/j.bioactmat.2020.03.005] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/06/2020] [Accepted: 03/06/2020] [Indexed: 01/14/2023] Open
Abstract
Protein exerts a critical influence on the degradation behavior of absorbable magnesium (Mg)-based implants. However, the interaction mechanism between protein and a micro-arc oxidation (MAO) coating on Mg alloys remains unclear. Hereby, a MAO coating was fabricated on AZ31 Mg alloy. And its degradation behavior in phosphate buffer saline (PBS) containing bovine serum albumin (BSA) was investigated and compared with that of the uncoated alloy. Surface morphologies and chemical compositions were studied using Field-emission scanning electron microscope (FE-SEM), Fourier transform infrared spectrophotometer (FT-IR) and X-ray diffraction (XRD). The degradation behavior of the bare Mg alloy and its MAO coating was studied through electrochemical and hydrogen evolution tests. Cytotoxicity assay was applied to evaluate the biocompatibility of Mg alloy substrate and MAO coating. Results indicated that the presence of BSA decreased the degradation rate of Mg alloy substrate because BSA (RCH(NH2)COO‾) molecules combined with Mg2+ ions to form (RCH(NH2)COO)2Mg and thus inhibited the dissolution of Mg(OH)2 by impeding the attack of Cl‾ ions. In the case of MAO coated Mg alloy, the adsorption of BSA on MAO coating and the formation of (RCH(NH2)COO)2Mg exhibited a synergistic effect and enhanced the corrosion resistance of the coated alloy significantly. Furthermore, cell bioactive assay suggested that the MAO coating had good viability for MG63 cells due to its high surface area. BSA reduces degradation of Mg substrate due to the formation of (RCH(NH2)COO)2Mg. BSA inhibits degradation of MAO coating by acting as a protective layer. MAO coating promotes cell proliferation due to higher surface area. Cells were rounded shaped on MAO coating owing to the rough surface.
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18
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Zhang L, Li B, Zhang X, Wang D, Zhou L, Li H, Liang C, Liu S, Wang H. Biological and antibacterial properties of TiO 2 coatings containing Ca/P/Ag by one-step and two-step methods. Biomed Microdevices 2020; 22:24. [PMID: 32166408 DOI: 10.1007/s10544-020-00482-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The porous TiO2 coatings containing Ca/P/Ag were separately prepared on titanium (Ti) surface by one-step (micro-arc oxidation) and two-step methods (micro-arc oxidation and cathodic deposition), and then their surface morphology, composition, biological and antibacterial properties were compared. The results showed that the porous coatings containing Ca/P/Ag achieved by different methods showed similar surface morphology and elemental composition, however, by one-step method, silver existed in the coating as silver phosphate, while in the coatings prepared by two-step method, silver existed as metallic silver. Although both coatings showed excellent antibacterial property (the antimicrobial rate is over 99.9%), the surface coating prepared by one-step method had a more suitable release curve of Ag. In addition, the surface coating prepared by one-step method also presented better biological property, which was due to its enhanced surface roughness and hydrophilicity. Combining with its easy operation and long-term antibacterial property, its prospect for clinical application is more promising.
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Li CY, Yu C, Zeng RC, Zhang BC, Cui LY, Wan J, Xia Y. In vitro corrosion resistance of a Ta 2O 5 nanofilm on MAO coated magnesium alloy AZ31 by atomic layer deposition. Bioact Mater 2020; 5:34-43. [PMID: 31956734 PMCID: PMC6960486 DOI: 10.1016/j.bioactmat.2019.12.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/28/2019] [Accepted: 12/01/2019] [Indexed: 12/20/2022] Open
Abstract
Micro-arc oxidation (MAO) coating with outstanding adhesion strength to Mg alloys has attracted more and more attention. However, owing to the porous structure, aggressive ions easily invaded the MAO/substrate interface through the through pores, limiting long-term corrosion resistance. Therefore, a dense and biocompatible tantalum oxide (Ta2O5) nanofilm was deposited on MAO coated Mg alloy AZ31 through atomic layer deposition (ALD) technique to seal the micropores and regulate the degradation rate. Surface micrography, chemical compositions and crystallographic structure were characterized using FE-SEM, EDS, XPS and XRD. The corrosion resistance of all samples was evaluated through electrochemical and hydrogen evolution tests. Results revealed that the Ta2O5 film mainly existed in the form of amorphousness. Moreover, uniform deposition of Ta2O5 film and effective sealing of micropores and microcracks in MAO coating were achieved. The current density (i corr) of the composite coating decreased three orders of magnitude than that of the substrate and MAO coating, improving corrosion resistance. Besides, the formation and corrosion resistance mechanisms of the composite coating were proposed.
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Affiliation(s)
- Chang-Yang Li
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Chi Yu
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Rong-Chang Zeng
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China
| | - Bo-Cheng Zhang
- Jiaxing Microelectronics Engineering Center, Chinese Academy of Sciences, Jiaxing, 314022, China
| | - Lan-Yue Cui
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Jun Wan
- Jiaxing Microelectronics Engineering Center, Chinese Academy of Sciences, Jiaxing, 314022, China
| | - Yang Xia
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 100029, China
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Sedelnikova MB, Komarova EG, Sharkeev YP, Ugodchikova AV, Tolkacheva TV, Rau JV, Buyko EE, Ivanov VV, Sheikin VV. Modification of titanium surface via Ag-, Sr- and Si-containing micro-arc calcium phosphate coating. Bioact Mater 2019; 4:224-235. [PMID: 31406950 PMCID: PMC6684518 DOI: 10.1016/j.bioactmat.2019.07.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/01/2019] [Accepted: 07/16/2019] [Indexed: 11/19/2022] Open
Abstract
The current research is devoted to the study of the modification of the titanium implants by the micro-arc oxidation with bioactive calcium phosphate coatings containing Ag or Sr and Si elements. The coatings' microstructure, phase composition, morphology, physicochemical and biological properties were examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). Ag-containing and Sr-Si-incorporated coatings were formed in alkaline and acid electrolytes, respectively. The formation of the coatings occurred at different ranges of the applied voltages, which led to the significant difference in the coatings properties. The trace elements Ag, Sr and Si participated intensively in the plasma-chemical reactions of the micro-arc coatings formation. Ag-containing coatings demonstrated strong antibacterial effect against Staphylococcus aureus AТСС 6538-P. MTT in vitro test with 3T3-L1 fibroblasts showed no cytotoxicity appearance on Sr-Si-incorporated coatings.
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Affiliation(s)
- Mariya B. Sedelnikova
- Institute of Strength Physics and Materials Science of SB RAS, Academicheskii Prospect 2/4, Tomsk, 634055, Russia
| | - Ekaterina G. Komarova
- Institute of Strength Physics and Materials Science of SB RAS, Academicheskii Prospect 2/4, Tomsk, 634055, Russia
| | - Yurii P. Sharkeev
- Institute of Strength Physics and Materials Science of SB RAS, Academicheskii Prospect 2/4, Tomsk, 634055, Russia
- National Research Tomsk Polytechnic University, Lenina Prospect 30, Tomsk, 634050, Russia
| | - Anna V. Ugodchikova
- National Research Tomsk Polytechnic University, Lenina Prospect 30, Tomsk, 634050, Russia
| | - Tatiana V. Tolkacheva
- Institute of Strength Physics and Materials Science of SB RAS, Academicheskii Prospect 2/4, Tomsk, 634055, Russia
| | - Julietta V. Rau
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - Evgeny E. Buyko
- National Research Tomsk Polytechnic University, Lenina Prospect 30, Tomsk, 634050, Russia
- Siberian State Medical University, Moscovskii Tract 2, Tomsk, 634050, Russia
| | - Vladimir V. Ivanov
- Siberian State Medical University, Moscovskii Tract 2, Tomsk, 634050, Russia
| | - Vladimir V. Sheikin
- Siberian State Medical University, Moscovskii Tract 2, Tomsk, 634050, Russia
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Lin DJ, Fuh LJ, Chen CY, Chen WC, Lin JHC, Chen CC. Rapid nano-scale surface modification on micro-arc oxidation coated titanium by microwave-assisted hydrothermal process. Mater Sci Eng C Mater Biol Appl 2018; 95:236-247. [PMID: 30573246 DOI: 10.1016/j.msec.2018.10.085] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 09/07/2018] [Accepted: 10/25/2018] [Indexed: 10/28/2022]
Abstract
Nano to submicron scaled surface possesses excellent biological affinity and several processes have been undertaken to develop titanium implant with specific surface chemical and phase composition and nano-scale features. A simple process was used to modify the nano topographies on a micro-arc-oxidation (MAO) surface which shortens the time for the conventional hydrothermal process (HT). Nano-scaled anatase precipitates on the MAO surface with different crystallinities and morphologies were regulated via microwave-assisted hydrothermal in pure water (MWDD) or in pH conditioned mediums containing calcium and phosphorus ions (MWCP, MWCP9, MWCP11). The surface morphologies and structures were investigated by SEM, XRD, FTIR, and TEM. Anatase crystals as nano-spikes along [001] direction were observed on the surface of the MWDD and MWCP groups. Increasing the pH of the conditioned medium leads the precipitate to lose its crystallinity; the surface of MWCP11 is covered with amorphous anatase which has a 3D nano-sheet architecture. The MW treated surfaces possess superior hydrophilicity can adsorb more proteins (fibronectin and bovine serum albumin), and the osteoblasts-like MG63 cells on these surfaces have higher spreading ratios than on the MAO and HT groups. The cell viabilities in the MW groups were significantly higher than in the MAO and HT groups on the 7th day (P < 0.05), although their cell viabilities were similar on the first day. MWCP and MWCP11 have higher alkaline phosphatase activity on days 7 and 14 compared to other groups (P < 0.05). The MW treatment produces different nanomorphologies on the MAO surface and retains the original micro/submicron pores and surface calcium and phosphorus contents, thus it is expected to promote osseointegration without compromising the bond strength.
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Affiliation(s)
- Dan-Jae Lin
- Department of Dental Hygiene, China Medical University, Taichung, Taiwan, ROC; School of Dentistry, College of Dentistry, China Medical University, Taichung, Taiwan, ROC; Graduate Institute of Basic Medical Science, College of Medicine, China Medical University, Taichung, Taiwan, ROC; Biomaterials Translational Research Center, China Medical University Hospital, Taichung, Taiwan, ROC.
| | - Lih-Jyh Fuh
- Department of Dental Hygiene, China Medical University, Taichung, Taiwan, ROC; School of Dentistry, College of Dentistry, China Medical University, Taichung, Taiwan, ROC.
| | - Cheng-Yu Chen
- Graduate Institute of Basic Medical Science, College of Medicine, China Medical University, Taichung, Taiwan, ROC
| | - Wen-Cheng Chen
- Advanced Medical Devices and Composite Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung, Taiwan, ROC.
| | - Jiin-Huey Chern Lin
- Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan, ROC.
| | - Chiing-Chang Chen
- Department of Science Education and Application, National Taichung University of Education, Taichung, Taiwan, ROC.
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22
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He Y, Mu C, Shen X, Yuan Z, Liu J, Chen W, Lin C, Tao B, Liu B, Cai K. Peptide LL-37 coating on micro-structured titanium implants to facilitate bone formation in vivo via mesenchymal stem cell recruitment. Acta Biomater 2018; 80:412-424. [PMID: 30266635 DOI: 10.1016/j.actbio.2018.09.036] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/02/2018] [Accepted: 09/24/2018] [Indexed: 01/06/2023]
Abstract
Titanium (Ti) and Ti-alloys were widely used in clinic orthopedics, however, the insufficient bone formation surrounding Ti-based implants still limited their biological performances. Surface modification of Ti substrates is essential to improve their interactions with bone-forming cells and bone tissue. In this study, we modified Ti substrates by coating peptide LL-37 onto micro-structured Ti substrates and aimed to (i) induce mesenchymal stem cells (MSCs) migration both in vitro and in vivo, (ii) facilitate osteogenic differentiation of MSCs and new bone formation. The surface micro-structured Ti substrates with hydroxyapatite deposition were fabricated by a two-step method including micro-arc oxidation (MAO) and hydrothermal treatment. LL-37 was loaded on micro-structured Ti substrates with the assistance of polydopamine coating. We confirmed that surface-modified Ti substrates benefited viability, adhesion, migration and osteogenic differentiation of MSCs in vitro. In a femur-defect rat model, the surface-modified Ti implants effectively induced CD29+/CD90+ positive cells migration in one week after implantation. According to the results of H&E, Masson's trichrome staining and immunohistochemical staining of OCN, OPN and collagen I, the targeted Ti implants exhibited significant new bone formation after implantation for 4 weeks. These results indicate that the surface modification of Ti samples facilitated bone formation through MSCs recruitment. STATEMENT OF SIGNIFICANCE: The inherent surface bioinertness of titanium (Ti) and Ti-alloys still limits their biological performances in clinical applications. Recently, the strategy of mesenchymal stem cells (MSCs) recruitment has been proposed to improve the osteointegration of bone implants. Herein, we reports the surface modification of Ti implants from the point of MSCs recruitment. Peptide LL-37 was coated on micro-structured Ti substrates to (i) recruit MSCs, (ii) regulate bio-physiological performance of MSCs, and (iii) facilitate bone formation in vivo. Our results improve the understanding of the interaction between Ti implants and MSCs, and provide a promising strategy of MSCs recruitment in the design of bone repair related biomaterials.
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Affiliation(s)
- Ye He
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Caiyun Mu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Xinkun Shen
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China; School of Life Science, Chongqing University, Chongqing 400044, PR China
| | - Zhang Yuan
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Ju Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Weizhen Chen
- First Affiliated Hospital, College of Medicine, Zhejiang University, Key Laboratory of Clinical In Vitro Diagnostic Techniques of Zhejiang Province, Hangzhou, Zhejiang 310003, PR China
| | - Chuanchuan Lin
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Bailong Tao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China
| | - Bin Liu
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, School of Life Science, Southwest University, Chongqing 400715, PR China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China.
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Bulina NV, Chaikina MV, Prosanov IY, Komarova EG, Sedelnikova MB, Sharkeev YP, Sheikin VV. Lanthanum-silicate-substituted apatite synthesized by fast mechanochemical method: Characterization of powders and biocoatings produced by micro-arc oxidation. Mater Sci Eng C Mater Biol Appl 2018; 92:435-446. [PMID: 30184769 DOI: 10.1016/j.msec.2018.06.057] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 04/17/2018] [Accepted: 06/27/2018] [Indexed: 01/21/2023]
Abstract
Lanthanum-silicate substituted apatite with equal concentrations of the substituents in the range of 0.2-6.0 mol were produced by a fast method - mechanochemical synthesis. This method makes it possible to synthesize a nanosized single-phase product by activating reaction mixtures containing CaHPO4, CaO, La(OH)3 and SiO2·H2O for 25-30 min in AGO-2 and AGO-3 planetary mills. The structure of the apatites was investigated by the FTIR and XRD methods. It was found that the synthesized samples with substituent concentrations up to 2 mol are substituted oxy-hydroxyapatites, at higher concentrations, they are substituted oxyapatites. The mechanochemically synthesized apatite with a substituent concentration of 0.5 mol was used for depositing biocoatings on titanium substrates by the micro-arc oxidation method. The structure of the coatings is mainly amorphous. In vitro biological tests demonstrated high biocompatibility of the coatings and the absence of cytotoxic action on mesenchymal stem cells.
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Affiliation(s)
- Natalia V Bulina
- Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze Str. 18, Novosibirsk 630128, Russia.
| | - Marina V Chaikina
- Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze Str. 18, Novosibirsk 630128, Russia
| | - Igor Yu Prosanov
- Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze Str. 18, Novosibirsk 630128, Russia
| | - Ekaterina G Komarova
- Institute of Strength Physics and Materials Science SB RAS, Academicheskii Pr. 2/4, Tomsk 634055, Russia
| | - Mariya B Sedelnikova
- Institute of Strength Physics and Materials Science SB RAS, Academicheskii Pr. 2/4, Tomsk 634055, Russia
| | - Yurii P Sharkeev
- Institute of Strength Physics and Materials Science SB RAS, Academicheskii Pr. 2/4, Tomsk 634055, Russia
| | - Vladimir V Sheikin
- Siberian State Medical University, Moscovskii Tr. 2, Tomsk 634050, Russia
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24
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Huang Q, Li X, Elkhooly TA, Xu S, Liu X, Feng Q, Wu H, Liu Y. The osteogenic, inflammatory and osteo-immunomodulatory performances of biomedical Ti-Ta metal-metal composite with Ca- and Si-containing bioceramic coatings. Colloids Surf B Biointerfaces 2018; 169:49-59. [PMID: 29747030 DOI: 10.1016/j.colsurfb.2018.05.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 05/03/2018] [Accepted: 05/04/2018] [Indexed: 02/01/2023]
Abstract
It is known that good mechanical properties, low modulus to reduce stress-shielding effect, favorable osteogenic activity and limited inflammatory response are critical factors for orthopedic implants to induce excellent osteointegration. In this study, Ti-20% Ta metal-metal composite (referred as Ti-Ta) which consisted of Ti- and Ta-rich phases was fabricated via the strategy of powder metallurgy. Micro-arc oxidation (MAO) was employed to modify the surface of Ti-Ta composite. The surfaces of Ti-Ta composite after MAO treatment at an applied voltage of 250 (referred as MAO-250 V) or 300 V (referred as MAO-300 V) exhibited three distinct zones with significantly different morphological features and surface chemistry. Osteoblast-like SaOS-2 cells were found to be preferential to attach on the Ta-rich phase and its surrounding areas, exhibiting an area-dependent adhesion tendency. However, the attachment of Raw 264.7 macrophages was found to be insensitive to the surface characteristics. The proliferation and differentiation of SaOS-2 cells cultured on various surfaces basically followed the trend: MAO-modified surfaces > Ti-Ta surface > Ti surface. The Ti-Ta and MAO-modified surfaces were found to inhibit the inflammatory response and polarize macrophages to anti-inflammatory M2 phenotype compared to Ti surface. Moreover, the microenvironments created by Ti-Ta, MAO-250 V and MAO-300 V/macrophage interactions promoted the proliferation and differentiation of SaOS-2 cells compared to that created by Ti/macrophage interactions. MAO-300 V surface exhibited further enhanced positive osteo-immunomodulatory effects compared to Ti-Ta surface. Together, the Ti-20% Ta metal-metal composite modified by MAO at an applied voltage of 300 V is considered as a promising implant material for orthopedic applications.
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Affiliation(s)
- Qianli Huang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR China
| | - Xuezhong Li
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR China
| | - Tarek A Elkhooly
- Department of ceramics, Inorganic Chemical Industries Division, National Research Centre, Dokki, 12622, Cairo, Egypt
| | - Shenghang Xu
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR China
| | - Xujie Liu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China
| | - Qingling Feng
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China
| | - Hong Wu
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR China.
| | - Yong Liu
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR China.
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25
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Sukuroglu EE, Sukuroglu S, Akar K, Totik Y, Efeoglu I, Arslan E. The effect of TiO 2 coating on biological NiTi alloys after micro-arc oxidation treatment for corrosion resistance. Proc Inst Mech Eng H 2017; 231:699-704. [PMID: 28452254 DOI: 10.1177/0954411917705909] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
NiTi alloys exhibit good properties, such as shape memory behavior, high corrosion resistant, having the closest elasticity modulus of a human bone and superior biocompatibility properties. However, the surface problems that arise during the use of this alloy limit the usage in the industry and health sector. In recent years, micro-arc oxidation method is used to improve the surface properties and increase the usage of these alloys. In this study, the TiO2 coatings were deposited on the NiTi substrates. The surface topography, morphology, crystallographic structure, and thickness of the coatings were determined using scanning electron microscopy and X-ray diffraction. The corrosion properties were investigated using potentiostat test unit in two different media such as NaCl solution and simulated body fluid. The results show that the coated samples have higher corrosion resistance than uncoated samples in the two different media.
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Affiliation(s)
- Ebru Emine Sukuroglu
- 1 Department of Mechanical Engineering, Faculty of Engineering, Gümüşhane University, Gümüşhane, Turkey
| | - Suleyman Sukuroglu
- 2 Vocational College of Gümüşhane, Gümüşhane University, Gümüşhane, Turkey
| | - Kubra Akar
- 3 Department of Mechanical Engineering, Faculty of Engineering, Ataturk University, Erzurum, Turkey
| | - Yasar Totik
- 3 Department of Mechanical Engineering, Faculty of Engineering, Ataturk University, Erzurum, Turkey
| | - Ihsan Efeoglu
- 3 Department of Mechanical Engineering, Faculty of Engineering, Ataturk University, Erzurum, Turkey
| | - Ersin Arslan
- 3 Department of Mechanical Engineering, Faculty of Engineering, Ataturk University, Erzurum, Turkey
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26
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Xiong Y, Hu Q, Song R, Hu X. LSP/MAO composite bio-coating on AZ80 magnesium alloy for biomedical application. Mater Sci Eng C Mater Biol Appl 2017; 75:1299-1304. [PMID: 28415419 DOI: 10.1016/j.msec.2017.03.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 12/16/2016] [Accepted: 03/01/2017] [Indexed: 11/25/2022]
Abstract
A composite bio-coating was fabricated on AZ80 magnesium (Mg) alloy by using micro-arc oxidation (MAO) under the pretreatment of laser shock peening (LSP) in order to improve the bio-corrosion resistance and the mechanical integrity. LSP treatment could induce grain refinement and compressive residual stress field on the surface of material. MAO bio-coating was grown in alkaline electrolyte with hydroxyapatite (HA, Ca10(PO4)6(OH)2) to improve the biological properties of the material. The microstructure, element and phase composition for untreated based material (BM) and treated samples (LSP layer, MAO bio-coating and LSP/MAO composite bio-coating) were investigated by transmission electron microscopy (TEM), scanning electron microscope (SEM), energy dispersion spectroscopy (EDS) and X-ray diffraction (XRD). Electrochemical tests and slow strain rate tensile (SSRT) tests were used to evaluate the corrosion resistance and the stress corrosion susceptibility in simulated body fluid (SBF). The results indicated that LSP/MAO composite bio-coating can not only improve the corrosion resistance of Mg alloy substrate evidently but also increase the mechanical properties in SBF compared to LSP layer and MAO bio-coating. Mg alloy treated by LSP/MAO composite technique should be better suited as biodegradable orthopedic implants.
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Affiliation(s)
- Ying Xiong
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China; College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China.
| | - Qiang Hu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Renguo Song
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, Jiangsu, China
| | - Xiaxia Hu
- Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China; College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
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27
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Sedelnikova MB, Komarova EG, Sharkeev YP, Tolkacheva TV, Khlusov IA, Litvinova LS, Yurova KA, Shupletsova VV. Comparative investigations of structure and properties of micro-arc wollastonite-calcium phosphate coatings on titanium and zirconium-niobium alloy. Bioact Mater 2017; 2:177-184. [PMID: 29744428 PMCID: PMC5935056 DOI: 10.1016/j.bioactmat.2017.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 01/23/2017] [Indexed: 12/01/2022] Open
Abstract
Investigation results of micro-arc wollastonite–calcium phosphate (W–CaP) biocoatings on the pure titanium (Ti) and Zr–1wt.%Nb (Zr–1Nb) alloy were presented. The voltages of 150–300 V generate the micro-arc oxidation (MAO) process with the initial amplitude current of 150–550 A and 100–350 A for Ti and Zr–1Nb substrates, respectively. The identical dependencies of changes of the coating thickness, surface roughness and adhesion strength on the process voltage were revealed for the both substrates. The W–CaP coatings with the thickness of 10–11 μm were formed on Ti and Zr–1Nb under the low process voltage of 130–150 V. Elongated wollastonite particles with the size in the range of 40–100 μm were observed in such coatings. The structure of the coatings on Ti was presented by the X–ray amorphous and crystalline phases. The X–ray reflexes relating to the crystalline phases of Ti and wollastonite were observed only in XRD patterns of the coatings deposited under 130–200 V on Ti. While, the crystalline structure with phases of CaZr4(PO4)6, β–ZrP2O7, ZrO2, and Zr was detected in the coatings on Zr–1Nb. FT–IRS, XRD, SEM, and TEM data confirmed that the increase of the process voltage to 300 V leads to the dissociation of the wollastonite. No toxic effect of specimens on a viability, morphology and motility of human adipose–derived multipotent mesenchymal stem cells was revealed in vitro. Investigations of microarc wollastonite–calcium phosphate biocoatings on the titanium and Zr–1wt.%Nb alloy were presented. The thin coatings 10–11 μm with wollastonite particles formed under the low process voltage of 130–150 V. The increase of the process voltage to 300 V leads to the dissociation of the wollastonite. Coatings on both substrates have not toxic effect on the morphofunctional status of AMMSCs culture in vitro.
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Affiliation(s)
- M B Sedelnikova
- Institute of Strength Physics and Materials Science of SB RAS, Academicheskii pr., 2/4, 634055, Tomsk, Russia
| | - E G Komarova
- Institute of Strength Physics and Materials Science of SB RAS, Academicheskii pr., 2/4, 634055, Tomsk, Russia
| | - Yu P Sharkeev
- Institute of Strength Physics and Materials Science of SB RAS, Academicheskii pr., 2/4, 634055, Tomsk, Russia.,National Research Tomsk Polytechnic University, Lenina pr., 30, 634050, Tomsk, Russia
| | - T V Tolkacheva
- Institute of Strength Physics and Materials Science of SB RAS, Academicheskii pr., 2/4, 634055, Tomsk, Russia
| | - I A Khlusov
- National Research Tomsk Polytechnic University, Lenina pr., 30, 634050, Tomsk, Russia.,Siberian State Medical University, 2 Moskovsky tr., 634050, Tomsk, Russia.,Immanuel Kant Baltic Federal University, 14 A. Nevskogo st., 236041, Kaliningrad, Russia
| | - L S Litvinova
- Immanuel Kant Baltic Federal University, 14 A. Nevskogo st., 236041, Kaliningrad, Russia
| | - K A Yurova
- Immanuel Kant Baltic Federal University, 14 A. Nevskogo st., 236041, Kaliningrad, Russia
| | - V V Shupletsova
- Immanuel Kant Baltic Federal University, 14 A. Nevskogo st., 236041, Kaliningrad, Russia
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28
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Shangguan Y, Sun L, Wan P, Tan L, Wang C, Fan X, Qin L, Yang K. Comparison study of different coatings on degradation performance and cell response of Mg-Sr alloy. Mater Sci Eng C Mater Biol Appl 2016; 69:95-107. [PMID: 27612693 DOI: 10.1016/j.msec.2016.06.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 06/13/2016] [Accepted: 06/22/2016] [Indexed: 12/26/2022]
Abstract
To solve the problem of rapid degradation for magnesium-based implants, surface modification especially coating method is widely studied and showed the great potential for clinical application. However, as concerned to the further application and medical translation for biodegradable magnesium alloys, there are still lack of data and comparisons among different coatings on their degradation and biological properties. This work studied three commonly used coatings on Mg-Sr alloy, including micro-arc oxidation coating, electrodeposition coating and chemical conversion coating, and compared these coatings for requirements of favorable degradation and biological performances, how each of these coating systems has performed. Finally the mechanism for the discrepancy between these coatings is proposed. The results indicate that the micro-arc oxidation coating on Mg-Sr alloy exhibited the best corrosion resistance and cell response among these coatings, and is proved to be more suitable for the orthopedic application.
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29
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Jing W, Zhang M, Jin L, Zhao J, Gao Q, Ren M, Fan Q. Assessment of osteoinduction using a porous hydroxyapatite coating prepared by micro-arc oxidation on a new titanium alloy. Int J Surg 2015; 24:51-6. [PMID: 26306772 DOI: 10.1016/j.ijsu.2015.08.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 07/16/2015] [Accepted: 08/05/2015] [Indexed: 11/19/2022]
Abstract
Surface modification and material improvement is now an important way to improve the osseointegration between bone and uncemented prothesis. The purpose of this study was to investigate the bone ingrowth potential of porous hydroxyapatite (HA) coatings prepared by micro-arc oxidation (MAO) on Ti-3Zr-2Sn-3Mo-25Nb, a new titanium alloy. HA-coated specimens were implanted in the left proximal femoral medullary canal of beagles for 4, 12, and 24 weeks, and uncoated specimens were implanted in the right as a control. The surface morphology and phase composition were investigated with environmental scanning electron microscopy and X-ray diffractometry. The bone ingrowth was assessed by histomorphometry. A pull-out test was performed to assess the mechanical performance of the bone-implant interface. A porous coating was well prepared on the new titanium alloy by using the MAO method. The bone-to-implant contact was significantly higher for the HA-coated group compared to that in the uncoated group. Mechanical tests showed that the HA-coated group had significantly higher maximum force at the bone-implant interface compared to the uncoated specimens. MAO is a suitable coating approach for this new titanium alloy. The HA coating prepared by this approach can significantly promote bone ingrowth and the mechanical performance of the bone-implant interface.
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Affiliation(s)
- Wensen Jing
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Minghua Zhang
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Lei Jin
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Jian Zhao
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Qing Gao
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Min Ren
- Research Institute for Strength of Metals, Xi'an Jiaotong University, Xi'an 710049, Shanxi, China
| | - Qingyu Fan
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China.
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30
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Khanna R, Kokubo T, Matsushita T, Nomura Y, Nose N, Oomori Y, Yoshida T, Wakita K, Takadama H. Novel artificial hip joint: A layer of alumina on Ti-6Al-4V alloy formed by micro-arc oxidation. Mater Sci Eng C Mater Biol Appl 2015; 55:393-400. [PMID: 26117770 DOI: 10.1016/j.msec.2015.05.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 03/23/2015] [Accepted: 05/07/2015] [Indexed: 01/27/2023]
Abstract
In many hip replacement surgeries, monolithic alumina is used as a femoral head due to its high wear resistance. However, it is liable to fracture under load bearing operations in artificial joints. We propose a promising way to overcome this limitation by forming a dense alumina layer onto a relatively tough substrate such as Ti-6Al-4V alloy to obtain high wear resistance on a material that can sustain relatively high toughness. For this purpose, Al metal powders were deposited onto Ti-6Al-4V alloy by cold spraying in N2 atmosphere. Interfacial adhesion between Al and the Ti alloy was improved by the formation of a reaction layer of Al3Ti between them by heating at 640 °C for 1h in air. Subsequently, micro-arc oxidation treatment was performed to oxidize Al. The oxidized layer was composed of an outer porous layer of γ-alumina and inner-most dense layer of α-alumina. The α-alumina layer was almost fully densified and exhibited high Vickers hardness almost equal to that of alumina ceramics used as the femoral head. Thus, the newly developed dense alumina/Ti alloy can be potentially used to produce the reliable bearing surfaces of artificial hip joint.
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Affiliation(s)
- Rohit Khanna
- Department of Biomedical Sciences, College of Life & Health Sciences, Chubu University, 1200 Matsumoto cho, Kasugai, Aichi 487-8501, Japan.
| | - Tadashi Kokubo
- Department of Biomedical Sciences, College of Life & Health Sciences, Chubu University, 1200 Matsumoto cho, Kasugai, Aichi 487-8501, Japan
| | - Tomiharu Matsushita
- Department of Biomedical Sciences, College of Life & Health Sciences, Chubu University, 1200 Matsumoto cho, Kasugai, Aichi 487-8501, Japan
| | - Yuuji Nomura
- Taiyo Nippon Sanso, Inc., 1-3-26, Koyama, Shinagawa 142-8558, Tokyo, Japan
| | - Norihiro Nose
- Taiyo Nippon Sanso, Inc., 1-3-26, Koyama, Shinagawa 142-8558, Tokyo, Japan
| | - Yoshiyuki Oomori
- Taiyo Nippon Sanso, Inc., 1-3-26, Koyama, Shinagawa 142-8558, Tokyo, Japan
| | - Takuya Yoshida
- Graduate School of Electrical and Electronics Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan
| | - Koichi Wakita
- Graduate School of Electrical and Electronics Engineering, Chubu University, Kasugai, Aichi 487-8501, Japan
| | - Hiroaki Takadama
- Department of Biomedical Sciences, College of Life & Health Sciences, Chubu University, 1200 Matsumoto cho, Kasugai, Aichi 487-8501, Japan
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31
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Teker D, Muhaffel F, Menekse M, Karaguler NG, Baydogan M, Cimenoglu H. Characteristics of multi-layer coating formed on commercially pure titanium for biomedical applications. Mater Sci Eng C Mater Biol Appl 2014; 48:579-85. [PMID: 25579960 DOI: 10.1016/j.msec.2014.12.058] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 10/11/2014] [Accepted: 12/17/2014] [Indexed: 10/24/2022]
Abstract
An innovative multi-layer coating comprising a bioactive compound layer (consisting of hydroxyapatite and calcium titanate) with an underlying titanium oxide layer (in the form of anatase and rutile) has been developed on Grade 4 quality commercially pure titanium via a single step micro-arc oxidation process. Deposition of a multi-layer coating on titanium enhanced the bioactivity, while providing antibacterial characteristics as compared its untreated state. Furthermore, introduction of silver (4.6wt.%) into the multi-layer coating during micro-arc oxidation process imposed superior antibacterial efficiency without sacrificing the bioactivity.
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Affiliation(s)
- Dilek Teker
- Department of Metallurgical and Materials Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Faiz Muhaffel
- Department of Metallurgical and Materials Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Meryem Menekse
- Department of Molecular Biology and Genetics, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Nevin Gul Karaguler
- Department of Molecular Biology and Genetics, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Murat Baydogan
- Department of Metallurgical and Materials Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey; Prof. Dr. Adnan Tekin Material Sciences and Production Technologies Applied Research Center, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Huseyin Cimenoglu
- Department of Metallurgical and Materials Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey.
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32
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Xia YH, Zhang BP, Lu CX, Geng L. Improving the corrosion resistance of Mg-4.0Zn-0.2Ca alloy by micro-arc oxidation. Mater Sci Eng C Mater Biol Appl 2013; 33:5044-50. [PMID: 24094222 DOI: 10.1016/j.msec.2013.08.033] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 08/15/2013] [Accepted: 08/27/2013] [Indexed: 11/28/2022]
Abstract
In this paper, corrosion resistance of the Mg-4.0Zn-0.2Ca alloy was modified by micro-arc oxidation (MAO) process. The microstructure and phase constituents of MAO layer were characterized by SEM, XRD and X-ray photoelectron spectroscopy (XPS). The corrosion resistance of MAO treated Mg-4.0Zn-0.2Ca alloy in the simulated body fluid were characterized by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The microstructure results indicated that a kind of ceramic film was composed by MgO and MgF2 was formed on the surface of Mg-4.0Zn-0.2Ca alloy after MAO treatment. The electrochemical test reveals that the corrosion resistance of MAO treated samples increase 1 order of magnitude. The mechanical intensity test showed that the MAO treated samples has suitable mechanical properties.
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Affiliation(s)
- Y H Xia
- The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
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