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Long LX, Chen FF, Cui LY, Wei ZS, Wang HT, Zeng RC, Zheng YF. Comparison of microstructure, mechanical property, and degradation rate of Mg-1Li-1Ca and Mg-4Li-1Ca alloys. Bioact Mater 2023; 26:279-291. [PMID: 36950154 PMCID: PMC10025034 DOI: 10.1016/j.bioactmat.2023.02.030] [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: 12/08/2022] [Revised: 02/27/2023] [Accepted: 02/27/2023] [Indexed: 03/15/2023] Open
Abstract
Mg-1 wt.% Li-1 wt.% Ca (LX11) and Mg-4 wt.% Li-1 wt.% Ca (LX41) alloys share the same hexagonal closed-packed crystalline structure. However, the differences in microstructure, mechanical properties, and degradation rates between the two alloys are not well understood. Hereby, the above three aspects of LX11 and LX41 alloys were studied via optical microscopy, tensile tests, and electrochemical polarization and electrochemical impedance spectroscopy, together with hydrogen evolution. The concentration of the released Mg2+, Ca2+, and Li+ ions was analyzed using a flame atomic absorption spectrophotometer. Results demonstrated that the LX11 alloy was composed of finer α-Mg grains, fewer twins, and smaller volume fractions of the intermetallic phases Mg2Ca than the LX41 alloy. The increasing Li concentration generated a weak decrease in the yield strength of the Mg-Li-Ca alloys, a remarkable increase in elongation to failure, and a stable ultimate tensile strength. The LX11 alloy had better corrosion resistance than the LX41 alloy. The release rate of the cations (Mg2+, Ca2+, and Li+) varied significantly with time. The release rate of metallic ions in Hank's solution cannot reflect the true corrosion rate of Mg-Li-Ca alloys due to the formation of the precipitated corrosion products and their difference in solubility. The dealloying corrosion mechanism of the Mg2Ca phase in Mg-Li-Ca alloys was proposed.
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Affiliation(s)
- Li-Xin Long
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Fen-Fen Chen
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Lan-Yue Cui
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Ze-Song Wei
- Institute of Corrosion Science and Technology, Guangzhou, 510530, China
| | - Hai-Tao Wang
- Institute of Corrosion Science and Technology, Guangzhou, 510530, China
| | - Rong-Chang Zeng
- 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
- Corresponding author. College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.
| | - Yu-Feng Zheng
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
- International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University, 2-39-2 Kumamoto, 860-8555, Japan
- Corresponding author. School of Materials Science and Engineering, Peking University, Beijing, 100871, China.
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2
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Xue K, Li YJ, Ma TH, Cui LY, Liu CB, Zou YH, Li SQ, Zhang F, Zeng RC. In vitro corrosion resistance and dual antibacterial ability of curcumin loaded composite coatings on AZ31 alloy: Effect of amorphous calcium carbonate. J Colloid Interface Sci 2023; 649:867-879. [PMID: 37390534 DOI: 10.1016/j.jcis.2023.06.105] [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: 01/08/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 07/02/2023]
Abstract
Rapid corrosion and bacterial infection are obstacles to put into use biodegradable magnesium (Mg) alloy as biomedical materials. In this research, an amorphous calcium carbonate (ACC)@curcumin (Cur) loaded poly-methyltrimethoxysilane (PMTMS) coating prepared by self-assembly method on micro-arc oxidation (MAO) coated Mg alloy has been proposed. Scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy are adopted to analyze the morphology and composition of the obtained coatings. The corrosion behaviour of the coatings is estimated by hydrogen evolution and electrochemical tests. The spread plate method without or with 808 nm near-infrared irradiation is applied to evaluate the antimicrobial and photothermal antimicrobial ability of the coatings. Cytotoxicity of the samples is tested by 3-(4,5)-dimethylthiahiazo(-z-y1)-2,5-di- phenytetrazoliumromide (MTT) and live/dead assay culturing with MC3T3-E1 cells. Results show that the MAO/ACC@Cur-PMTMS coating exhibited favourable corrosion resistance, dual antibacterial ability, and good biocompatibility. Cur was employed as an antibacterial agent and photosensitizer for photothermal therapy. The core of ACC significantly improved the loading of Cur and the deposition of hydroxyapatite corrosion products during degradation, which greatly promoted the long-term corrosion resistance and antibacterial activity of Mg alloys as biomedical materials.
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Affiliation(s)
- Kui Xue
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yan-Jin Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Tian-Hao Ma
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Lan-Yue Cui
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Cheng-Bao Liu
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yu-Hong Zou
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Shuo-Qi Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Fen Zhang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Rong-Chang Zeng
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
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Ren WH, Xin S, Yang K, Yu YB, Li SM, Zheng JJ, Huang K, Zeng RC, Yang XX, Gao L, Li SQ, Zhi K. Strontium‐Doped Hydroxyapatite Promotes Osteogenic Differentiation of Bone Marrow Mesenchymal Stem Cells in Osteoporotic Rats through the CaSR‐JAK2/STAT3 Signaling Pathway. Advanced NanoBiomed Research 2022. [DOI: 10.1002/anbr.202200018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Wen-Hao Ren
- Department of Oral and Maxillofacial Surgery The Affiliated Hospital of Qingdao University No.1677 Wutaishan Road Qingdao 266003 China
| | - Shanshan Xin
- Department of Oral and Maxillofacial Surgery The Affiliated Hospital of Qingdao University No.1677 Wutaishan Road Qingdao 266003 China
- School of Stomatology of Qingdao University Qingdao University Qingdao 266003 China
| | - Kai Yang
- School of Materials Science and Engineering Shandong University of Science and Technology Qingdao Shandong 266590 China
| | - Yan-Bin Yu
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology Shandong University of Science and Technology Qingdao 266590 China
| | - Shao-Ming Li
- Department of Oral and Maxillofacial Surgery The Affiliated Hospital of Qingdao University No.1677 Wutaishan Road Qingdao 266003 China
- School of Stomatology of Qingdao University Qingdao University Qingdao 266003 China
| | - Jing-Jing Zheng
- Department of Endodontics The Affiliated Hospital of Qingdao University Qingdao 266003 China
| | - Kai Huang
- Department of Radiology The Affiliated Hospital of Qingdao University Qingdao China
| | - Rong-Chang Zeng
- School of Materials Science and Engineering Shandong University of Science and Technology Qingdao Shandong 266590 China
| | - Xiao-Xia Yang
- Department of Oral and Maxillofacial Surgery The Affiliated Hospital of Qingdao University No.1677 Wutaishan Road Qingdao 266003 China
- School of Stomatology of Qingdao University Qingdao University Qingdao 266003 China
| | - Ling Gao
- Department of Oral and Maxillofacial Surgery The Affiliated Hospital of Qingdao University No.1677 Wutaishan Road Qingdao 266003 China
- Key Lab of Oral Clinical Medicine The Affiliated Hospital of Qingdao University Qingdao 266003 China
| | - Shuo-Qi Li
- School of Materials Science and Engineering Shandong University of Science and Technology Qingdao Shandong 266590 China
| | - Keqian Zhi
- Department of Oral and Maxillofacial Surgery The Affiliated Hospital of Qingdao University No.1677 Wutaishan Road Qingdao 266003 China
- School of Stomatology of Qingdao University Qingdao University Qingdao 266003 China
- Key Lab of Oral Clinical Medicine The Affiliated Hospital of Qingdao University Qingdao 266003 China
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Liu CB, Cheng L, Qian B, Cui LY, Zeng RC. Corrosion self-warning and repair tracking of polymeric coatings based on stimulus responsive nanosensors. Nanoscale 2022; 14:8429-8440. [PMID: 35642496 DOI: 10.1039/d2nr01406h] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Smart polymeric coatings with early corrosion self-warning and damage self-repairing characteristics have garnered tremendous interest due to their ability to sense corrosion reactions and repair coating defects. However, tracking the repair process and its underlying protection mechanism is highly challenging. Herein, we report the construction of a novel composite coating by incorporating multifunctional nanosensors (graphene oxide-zeolitic imidazole frameworks loaded with 1,10-phenanthroline) into a thermo-responsive polyurethane. Under damaging events, the localized acidity derived from metal corrosion stimulates the decomposition of the nanosensors to produce 1,10-phenanthroline and benzimidazole. The generated ferrous ions are rapidly sensed by the released 1,10-phenanthroline to produce a conspicuous red color, which warns of the corrosion occurrence. In profiting from the photothermal effect of graphene oxide, the composite coating exhibits efficient crack closure behavior under near-infrared light irradiation. Morphology observation indicates that a coating scratch (about 30 μm wide) almost closed with 20 s of irradiation. The photothermally activated crack closure combined with benzimidazole inhibition endows the prepared coating with superior self-repairing performance. Interestingly, the change in color intensity around the coating defect can assist in tracking the repair process. Therefore, this work provides a novel strategy to visualize microscopic behaviors during damage and repair processes.
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Affiliation(s)
- Cheng-Bao Liu
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Li Cheng
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Bei Qian
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Lan-Yue Cui
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Rong-Chang Zeng
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
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Han R, He H, Liu X, Zhao L, Yang Y, Liu CB, Zeng RC. Anti–corrosion and self-healing coatings with polyaniline/epoxy copolymer–urea–formaldehyde microcapsules for rusty steel sheets. J Colloid Interface Sci 2022; 616:605-617. [DOI: 10.1016/j.jcis.2022.02.088] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/17/2022] [Accepted: 02/19/2022] [Indexed: 11/15/2022]
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Zhang ZQ, Yang YX, Li JA, Zeng RC, Guan SK. Advances in coatings on magnesium alloys for cardiovascular stents - A review. Bioact Mater 2021; 6:4729-4757. [PMID: 34136723 PMCID: PMC8166647 DOI: 10.1016/j.bioactmat.2021.04.044] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [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: 03/08/2021] [Revised: 04/27/2021] [Accepted: 04/27/2021] [Indexed: 12/15/2022] Open
Abstract
Magnesium (Mg) and its alloys, as potential biodegradable materials, have drawn wide attention in the cardiovascular stent field because of their appropriate mechanical properties and biocompatibility. Nevertheless, the occurrence of thrombosis, inflammation, and restenosis of implanted Mg alloy stents caused by their poor corrosion resistance and insufficient endothelialization restrains their anticipated clinical applications. Numerous surface treatment tactics have mainly striven to modify the Mg alloy for inhibiting its degradation rate and enduing it with biological functionality. This review focuses on highlighting and summarizing the latest research progress in functionalized coatings on Mg alloys for cardiovascular stents over the last decade, regarding preparation strategies for metal oxide, metal hydroxide, inorganic nonmetallic, polymer, and their composite coatings; and the performance of these strategies in regulating degradation behavior and biofunction. Potential research direction is also concisely discussed to help guide biological functionalized strategies and inspire further innovations. It is hoped that this review can give assistance to the surface modification of cardiovascular Mg-based stents and promote future advancements in this emerging research field.
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Affiliation(s)
- Zhao-Qi Zhang
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| | - Yong-Xin Yang
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| | - Jing-An Li
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
| | - Rong-Chang Zeng
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Shao-Kang Guan
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, 100 Science Road, Zhengzhou, 450001, PR China
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7
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Wu W, Song L, Li YC, Zhang F, Zeng RC, Li SQ, Zou YH. Synthesis of glutamate intercalated Mg-Al layered double hydroxides: influence of stirring and aging time. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2020.1806862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Wei Wu
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Liang Song
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Yu-Chao Li
- School of Materials Science and Engineering, Liaocheng University, Liaocheng, China
| | - Fen Zhang
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Rong-Chang Zeng
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Shuo-Qi Li
- Corrosion Laboratory for Light Metals, College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Yu-Hong Zou
- Department of Bioengineering, College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
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8
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Qian T, Huang Q, He BH, Li TY, Liu SJ, Fu S, Zeng RC, Xiang KC. [Seasonal Variations in Nitrogen and Phosphorus Concentration and Stoichiometry of Hanfeng Lake in the Three Gorges Reservoir Area]. Huan Jing Ke Xue 2021; 41:5381-5388. [PMID: 33374054 DOI: 10.13227/j.hjkx.202003297] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Based on the seasonal changes in the nitrogen and phosphorus concentrations in Hanfeng Lake from March 2017 to February 2018, the nutrient limitation status was evaluated by the stoichiometric molar ratio of nitrogen and phosphorus. The results showed that the average concentrations of TN, DN, and NO3--N were 1.60, 1.25, and 0.91 mg·L-1 in Hanfeng Lake, respectively. The seasonal changes of those indicators were similar, showing the highest concentration in winter and lowest in summer. NO3--N accounted for TN significantly in the water body, and the concentrations of NH4+-N and NO2--N remained at low levels and changed steadily. The average concentrations of TP, DP, and PO43--P were 0.13, 0.09, and 0.06 mg·L-1, respectively. The changes in the concentrations of TP and DP were similar, showing a trend of increasing in spring and summer, and then decreasing in autumn and winter, while the PO43--P concentration showed the trend of fluctuated decrease. TN/TP varied from 11.07 to 56.02, with an average value of 29.23. TN/TP changed seasonally, with the highest value occurring in winter and the lowest value in summer. The conditions of the water body were conducive to growth and reproduction of algae for most of the time during sampling months. The water body was occasionally nitrogen limited and rarely phosphorus limited. The seasonal variation in TN/TP ratio was affected by several factors such as rainfall runoff, fertilizer use, sewage discharge, and aquatic biological activities. Further, protection strategies were proposed for the improvement of the water body in terms of present water quality characteristics in Hanfeng Lake.
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Affiliation(s)
- Tian Qian
- Key Laboratory of Eco-environment in the Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China
| | - Qi Huang
- Guiyang Engineering Corporation Limited, PowerChina, Guiyang 550081, China
| | - Bing-Hui He
- Key Laboratory of Eco-environment in the Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China
| | - Tian-Yang Li
- Key Laboratory of Eco-environment in the Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China
| | - Shu-Jing Liu
- Key Laboratory of Eco-environment in the Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China
| | - Shi Fu
- Key Laboratory of Eco-environment in the Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China
| | - Rong-Chang Zeng
- Key Laboratory of Eco-environment in the Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China
| | - Ke-Cui Xiang
- Environmental Monitoring Station, Kaizhou District, Chongqing, Kaizhou 405400, China
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Li LY, Han ZZ, Zeng RC, Qi WC, Zhai XF, Yang Y, Lou YT, Gu T, Xu D, Duan JZ. Microbial ingress and in vitro degradation enhanced by glucose on bioabsorbable Mg-Li-Ca alloy. Bioact Mater 2020; 5:902-916. [PMID: 32637753 PMCID: PMC7329939 DOI: 10.1016/j.bioactmat.2020.06.014] [Citation(s) in RCA: 8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/07/2020] [Accepted: 06/08/2020] [Indexed: 01/10/2023] Open
Abstract
Biodegradable magnesium alloys are challenging to be implanted in patients with hyperglycemia and diabetes. A hypothesis is suggested that glucose accelerates microbial ingress and in vitro degradation of Mg-Li-Ca implants. Corrosion resistance and mechanical properties was demonstrated using electrochemical, hydrogen evolution and tensile tests. The bacteria from Hank's solution were isolated via 16S rRNA gene analysis. The results revealed that Mg-1Li-1Ca alloy exhibited different responses to Hank's solution with and without glucose. The solution acidity was ascribed to Microbacterium hominis and Enterobacter xiangfangensis, indicating that glucose promoted microbial activity and degradation and deterioration in mechanical property of Mg-1Li-1Ca alloy.
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Affiliation(s)
- Ling-Yu Li
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Zhuang-Zhuang Han
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Rong-Chang Zeng
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.,School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China
| | - Wei-Chen Qi
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Xiao-Fan Zhai
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266590, China
| | - Yi Yang
- Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang, 110819, China
| | - Yun-Tian Lou
- Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang, 110819, China
| | - Tingyue Gu
- Department of Chemical & Biomolecular Engineering, Russ College of Engineering and Technology, Ohio University, Athens, OH, 45701-2979, USA
| | - Dake Xu
- Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang, 110819, China
| | - Ji-Zhou Duan
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266590, China
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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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11
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Yan W, Lian YJ, Zhang ZY, Zeng MQ, Zhang ZQ, Yin ZZ, Cui LY, Zeng RC. In vitro degradation of pure magnesium-the synergetic influences of glucose and albumin. Bioact Mater 2020; 5:318-333. [PMID: 32181417 PMCID: PMC7063336 DOI: 10.1016/j.bioactmat.2020.02.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 01/04/2020] [Revised: 02/22/2020] [Accepted: 02/23/2020] [Indexed: 11/17/2022] Open
Abstract
The biocorrosion of magnesium in the external physiological environment is still difficult to accurately evaluate the degradation behavior in vivo, particularly, in the microenvironment of the patients with hyperglycemia or diabetes. Thus, we explored the synergistic effects of glucose and protein on the biodegradation of pure magnesium, so as to have a deeper understanding the mechanism of the degradation in vivo. The surface morphology and corrosion product composition of pure magnesium were investigated using SEM, EDS, FTIR, XRD and XPS. The effect of glucose and albumin on the degradation rate of pure magnesium was investigated via electrochemical and immersion tests. The adsorption of glucose and albumin on the sample surface was observed using fluorescence microscopy. The results showed that the presence of 2 g/L glucose changed the micromorphology of corrosion products on the magnesium surface by reacting with metal cations, thus inhibiting the corrosion of pure magnesium. Protein formed a barrier layer to protect the magnesium at early stage of immersion. The chelation reaction between protein and magnesium surface might accelerate the degradation at later stage. There may be a critical glucose (albumin) content. Biodegradation of pure magnesium was inhibited at low concentrations and promoted at high concentrations. The synergistic effect of glucose and protein restrained the adsorption of aggressive chloride ions to a certain extent, and thus inhibited the degradation of pure magnesium considerably. Moreover, XPS results indicated that glucose promoted the adsorption of protein on the sample surface.
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Affiliation(s)
- Wei Yan
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Yi-Jie Lian
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Zhi-Yuan Zhang
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Mei-Qi Zeng
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Zhao-Qi Zhang
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Zheng-Zheng Yin
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Lan-Yue Cui
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Rong-Chang Zeng
- Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, China
- Corresponding author. Corrosion Laboratory for Light Metals, College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.
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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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Cui LY, Cheng SC, Liang LX, Zhang JC, Li SQ, Wang ZL, Zeng RC. In vitro corrosion resistance of layer-by-layer assembled polyacrylic acid multilayers induced Ca-P coating on magnesium alloy AZ31. Bioact Mater 2020; 5:153-163. [PMID: 32083229 PMCID: PMC7016252 DOI: 10.1016/j.bioactmat.2020.02.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [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: 12/16/2019] [Revised: 02/02/2020] [Accepted: 02/02/2020] [Indexed: 12/21/2022] Open
Abstract
Biodegradable magnesium (Mg)-based alloys have aroused great concern owing to their promising characteristics as temporary implants for orthopedic application. But their undesirably rapid corrosion rate under physiological conditions has limited the actual clinical application. This study reports the use of a novel biomimetic polyelectrolyte multilayer template, based on polyvinylpyrrolidone (PVP) and polyacrylic acid (PAA) via layer-by-layer (LbL) assembly, to improve the corrosion resistance of the alloy. Surface characterization techniques (field-emission scanning electron microscopy, Fourier transform infrared (FTIR) spectrophotometer and X-ray diffractometer) confirmed the formation of biomineralized Ca-P coating on AZ31 alloy. Both hydrogen evolution and electrochemical corrosion tests demonstrated that the corrosion protection of the polyelectrolyte-induced Ca-P coating on AZ31 alloy. The formation mechanism of biomineralized Ca-P coating was proposed.
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Affiliation(s)
- Lan-Yue Cui
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Shen-Cong Cheng
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Lu-Xian Liang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Jing-Chao Zhang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Shuo-Qi Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Zhen-Lin Wang
- College of Materials Science and Engineering, Chongqing University of Technology, Chongqing, 400065, China
| | - Rong-Chang Zeng
- 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
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Wang Y, Ding BH, Gao SY, Chen XB, Zeng RC, Cui LY, Li SJ, Li SQ, Zou YH, Han EH, Guan SK, Liu QY. In vitro corrosion of pure Mg in phosphate buffer solution-Influences of isoelectric point and molecular structure of amino acids. Mater Sci Eng C Mater Biol Appl 2019; 105:110042. [PMID: 31546440 DOI: 10.1016/j.msec.2019.110042] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 07/10/2019] [Accepted: 07/30/2019] [Indexed: 12/20/2022]
Abstract
Influences of proteins on degradation of magnesium alloys are of great significance but not well understood. In particular the roles of amino acids, the basic unit of proteins in regulating the progress of biodegradation of magnesium based materials remain unclear. This study aims to investigate the impacts of alanine, glutamic acid and lysine on degradation of pure magnesium in phosphate buffer solution through SEM, XPS, FTIR, potentiodynamic polarisation curves, electrochemical impedance spectroscopy and immersion tests. The changed contents of amino acids in solutions were detected by UV-vis spectrophotometer. Results demonstrate that the charges of the selected amino acids imposed significant contribution to suppressing the degradation of pure magnesium in phosphate buffer solution. The presence of amino acids led to the formation of phosphate-based corrosion products, increasing free corrosion potential, and reduction in corrosion current density and solution pH depending on their isoelectric points and molecular structures. A plausible corrosion mechanism organised by amino acids on pure magnesium was proposed.
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Affiliation(s)
- Yu Wang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Bao-Hua Ding
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Shi-Yu Gao
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xiao-Bo Chen
- School of Engineering, RMIT University, Carlton 3053, Victoria, Australia
| | - Rong-Chang Zeng
- 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.
| | - Lan-Yue Cui
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Shu-Juan Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Shuo-Qi Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yu-Hong Zou
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - En-Hou Han
- National Engineering Centre for Corrosion Control, Institute of Metals Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Shao-Kang Guan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China
| | - Qing-Yun Liu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
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Ji XJ, Gao L, Liu JC, Wang J, Cheng Q, Li JP, Li SQ, Zhi KQ, Zeng RC, Wang ZL. Corrosion resistance and antibacterial properties of hydroxyapatite coating induced by gentamicin-loaded polymeric multilayers on magnesium alloys. Colloids Surf B Biointerfaces 2019; 179:429-436. [PMID: 31005002 DOI: 10.1016/j.colsurfb.2019.04.029] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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: 01/30/2019] [Revised: 04/12/2019] [Accepted: 04/13/2019] [Indexed: 01/07/2023]
Abstract
As a result of their good biocompatibility, bioactivity, and mechanical properties, magnesium (Mg) alloys have received considerable attention as next generation biodegradable implants. Herein, in order to achieve a proper degradation rate and good antibacterial ability, we reported a novel hydroxyapatite coating induced by gentamicin (GS)-loaded polymeric multilayers for the surface treatment of the Mg alloy. The coating was characterized by X-ray diffraction, fourier transform infrared spectroscopy and scanning electron microscopy. The as-prepared hydroxyapatite coating showed the compact morphology and a well-crystallized apatite structure. This coating could improve the adhesion strength and reduce the corrosion rate of the substrate in simulated body fluid solution. Meanwhile, the drug release and antibacterial experiments demonstrated that the GS loaded specimen revealed a significant antimicrobial performance toward Staphylococcus aureus and had a prolonged release profile of GS, which would be helpful to the long-term bactericidal activity of the Mg implant. This coating showed acceptable biocompatibility via MTT assay and Live/dead staining. Thus, the multilayers-hydroxyapatite coated Mg alloy could improve the corrosion resistance and biocompatibility while delivering vital drugs to the site of implantation.
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Affiliation(s)
- Xiao-Jing Ji
- 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, 266000, China; Key Lab of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266000, China
| | - Jia-Cheng Liu
- Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266000, China; Key Lab of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266000, China; School of Stomatology, Qingdao University, Qingdao, Shandong, 266071, China
| | - Jing Wang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Qiang Cheng
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Jian-Peng Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Shuo-Qi Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.
| | - Ke-Qian Zhi
- Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266000, China; Key Lab of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266000, China.
| | - Rong-Chang Zeng
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.
| | - Zhen-Lin Wang
- College of Materials Science and Engineering, Chongqing University of Technology, Chongqing, 400065, China
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Li LY, Cui LY, Zeng RC, Li SQ, Chen XB, Zheng Y, Kannan MB. Advances in functionalized polymer coatings on biodegradable magnesium alloys - A review. Acta Biomater 2018; 79:23-36. [PMID: 30149212 DOI: 10.1016/j.actbio.2018.08.030] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [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: 05/12/2018] [Revised: 08/21/2018] [Accepted: 08/23/2018] [Indexed: 01/20/2023]
Abstract
Magnesium (Mg) and its alloys have become a research frontier in biodegradable materials owing to their superior biocompatibility and excellent biomechanical compatibility. However, their high degradation rate in the physiological environment should be well tackled prior to clinical applications. This review summarizes the latest progress in the development of polymeric coatings on biodegradable Mg alloys over the last decade, regarding preparation strategies for polylactic acid (PLA), poly (latic-co-glycolic) acid (PLGA), polycaprolactone (PCL), polydopamine (PDA), chitosan (CS), collagen (Col) and their composite, and their performance in terms of corrosion resistance and biocompatibility. Feasible perspectives and developing directions of next generation of polymeric coatings with respect to biomedical Mg alloys are briefly discussed. STATEMENT OF SIGNIFICANCE Magnesium (Mg) and its alloys have become a research frontier in biodegradable materials owing to their superior biocompatibility and suitable biomechanical compatibility. However, the principal drawback of Mg-based implants is their poor corrosion resistance in physiological environments. Hence, it is vital to mitigate the degradation/corrosion behavior of Mg alloys for safe biomedical deployments. This review summarizes the latest progress in development of polymeric coatings on biomedical Mg alloys regarding preparation strategy, corrosion resistance and biocompatibility, including polylactic acid (PLA), poly (latic-co-glycolic) acid (PLGA), polycaprolactone (PCL), chitosan (CS), polydopamine (PDA), collagen (Col) and their composite. In addition, functionalized polymer coatings with Mg alloys exhibits a promising prospect owing to their ability of degradation along with biocompatibility, self-healing, drug-delivery and osteoinduction.
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Affiliation(s)
- Ling-Yu Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Lan-Yue Cui
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Rong-Chang Zeng
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Shuo-Qi Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xiao-Bo Chen
- School of Engineering, RMIT University, Carlton, VIC 3053, Australia
| | - Yufeng Zheng
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - M Bobby Kannan
- Biomaterials and Engineering Materials (BEM) Laboratory, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
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Cui LY, Wei GB, Zeng RC, Li SQ, Zou YH, Han EH. Corrosion resistance of a novel SnO 2-doped dicalcium phosphate coating on AZ31 magnesium alloy. Bioact Mater 2018; 3:245-249. [PMID: 29744463 PMCID: PMC5935786 DOI: 10.1016/j.bioactmat.2017.11.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 10/26/2017] [Revised: 11/09/2017] [Accepted: 11/15/2017] [Indexed: 11/21/2022] Open
Abstract
A SnO2-doped dicalcium phosphate coating was prepared on AZ31 alloy by means of hydrothermal deposition. The results showed that the coating possessed a globular morphology with a long lamellar crystalline structure and a thickness of approximately 40 μm. The surface of the coating became smooth with an increase additive amount of the SnO2 nanoparticles. The corrosion current density and hydrogen evolution rate of the coating prepared in presence of SnO2 were reduced compared to the coating without SnO2 and the bare AZ31 substrate, indicating an improvement in the corrosion resistance of the SnO2-doped coating. A thick and dense SnO2-doped DCPA coating forms via hydrothermal deposition. The DCPA coating doped with 10 g L−1 SnO2 exhibits the best corrosion resistance. SnO2 provided heterogeneous nucleation sites for the deposition of Ca2+ and HPO42−.
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Affiliation(s)
- Lan-Yue Cui
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Guang-Bin Wei
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Rong-Chang Zeng
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
- Corresponding author.
| | - Shuo-Qi Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Yu-Hong Zou
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - En-Hou Han
- National Engineering Centre for Corrosion Control, Institute of Metals Research, Chinese Academy of Sciences, Shenyang, 110016, China
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Zeng RC, Cui LY, Jiang K, Liu R, Zhao BD, Zheng YF. In Vitro Corrosion and Cytocompatibility of a Microarc Oxidation Coating and Poly(L-lactic acid) Composite Coating on Mg-1Li-1Ca Alloy for Orthopedic Implants. ACS Appl Mater Interfaces 2016; 8:10014-10028. [PMID: 27022831 DOI: 10.1021/acsami.6b00527] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Manipulating the degradation rate of biomedical magnesium alloys poses a challenge. The characteristics of a microarc oxidation (MAO), prepared in phytic acid, and poly(L-lactic acid) (PLLA) composite coating, fabricated on a novel Mg-1Li-1Ca alloy, were studied through field emission scanning electron microscopy (FE-SEM), electron probe X-ray microanalysis (EPMA), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The corrosion behaviors of the samples were evaluated via hydrogen evolution, potentiodynamic polarization and electrochemical impedance spectroscopy in Hanks' solution. The results indicated that the MAO/PLLA composite coatings significantly enhanced the corrosion resistance of the Mg-1Li-1Ca alloy. MTT and ALP assays using MC3T3 osteoblasts indicated that the MAO/PLLA coatings greatly improved the cytocompatibility, and the morphology of the cells cultured on different samples exhibited good adhesion. Hemolysis tests showed that the composite coatings endowed the Mg-1Li-1Ca alloys with a low hemolysis ratio. The increased solution pH resulting from the corrosion of magnesium could be tailored by the degradation of PLLA. The degradation mechanism of the composite coatings was discussed. The MAO/PLLA composite coating may be appropriate for applications on degradable Mg-based orthopedic implants.
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Affiliation(s)
- Rong-Chang Zeng
- College of Materials Science and Engineering, Shandong University of Science and Technology , Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology , Qingdao 266590, China
| | - Lan-yue Cui
- College of Materials Science and Engineering, Shandong University of Science and Technology , Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology , Qingdao 266590, China
| | - Ke Jiang
- College of Materials Science and Engineering, Shandong University of Science and Technology , Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology , Qingdao 266590, China
| | - Rui Liu
- Affiliated Hospital of Qingdao University, Qingdao University , Qingdao 266590, China
| | - Bao-Dong Zhao
- Affiliated Hospital of Qingdao University, Qingdao University , Qingdao 266590, China
| | - Yu-Feng Zheng
- State Key Laboratory for Turbulence and Complex Systems and Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, China
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Zeng RC, Qi WC, Zhang F, Li SQ. In vitro corrosion of pure magnesium and AZ91 alloy-the influence of thin electrolyte layer thickness. Regen Biomater 2016; 3:49-56. [PMID: 26816655 PMCID: PMC4723276 DOI: 10.1093/rb/rbv028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 10/13/2015] [Revised: 11/12/2015] [Accepted: 11/17/2015] [Indexed: 01/22/2023] Open
Abstract
In vivo degradation predication faces a huge challenge via in vitro corrosion test due to the difficulty for mimicking the complicated microenvironment with various influencing factors. A thin electrolyte layer (TEL) cell for in vitro corrosion of pure magnesium and AZ91 alloy was presented to stimulate the in vivo corrosion in the micro-environment built by the interface of the implant and its neighboring tissue. The results demonstrated that the in vivo corrosion of pure Mg and the AZ91 alloy was suppressed under TEL condition. The AZ91 alloy was more sensitive than pure Mg to the inhibition of corrosion under a TEL thickness of less than 200 µm. The TEL thickness limited the distribution of current, and thus localized corrosion was more preferred to occur under TEL condition than in bulk solution. The TEL cell might be an appropriate approach to simulating the in vivo degradation of magnesium and its alloys.
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Affiliation(s)
- Rong-Chang Zeng
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Wei-Chen Qi
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Fen Zhang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Shuo-Qi Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
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Cui LY, Zeng RC, Li SQ, Zhang F, Han EH. Corrosion resistance of layer-by-layer assembled polyvinylpyrrolidone/polyacrylic acid and amorphous silica films on AZ31 magnesium alloys. RSC Adv 2016. [DOI: 10.1039/c6ra08613f] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A layer-by-layer (LbL)-assembled composite coating containing SiO2 and a biocompatible polyvinylpyrrolidone (PVP) and polyacrylic acid (PAA) multi-layer, designated as SiO2/(PVP/PAA)5, was prepared on AZ31 Mg alloy via dip-coating.
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Affiliation(s)
- Lan-Yue Cui
- College of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology
| | - Rong-Chang Zeng
- College of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology
| | - Shuo-Qi Li
- College of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology
| | - Fen Zhang
- College of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology
| | - En-Hou Han
- National Engineering Centre for Corrosion Control
- Institute of Metals Research
- Chinese Academy of Sciences
- Shenyang
- China
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Abstract
Magnesium and its alloys are promising biodegradable biomaterials but are still challenging to be used in person with high levels of blood glucose or diabetes. To date, the influence of glucose on magnesium degradation has not yet been elucidated, this issue requires more attention. Herein, we present pure Mg exhibiting different corrosion responses to saline and Hank’s solutions with different glucose contents, and the degradation mechanism of pure Mg in the saline solution with glucose in comparison with mannitol as a control. On one hand, the corrosion rate of pure Mg increases with the glucose concentration in saline solutions. Glucose rapidly transforms into gluconic acid, which attacks the oxides of the metal and decreases the pH of the solution; it also promotes the absorption of chloride ions on the Mg surface and consequently accelerates corrosion. On the other hand, better corrosion resistance is obtained with increasing glucose content in Hank’s solution due to the fact that glucose coordinates Ca2+ ions in Hank’s solution and thus improves the formation of Ca-P compounds on the pure Mg surface. This finding will open up new avenues for research on the biodegradation of bio-Mg materials in general, which could yield many new and interesting results.
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Affiliation(s)
- Rong-Chang Zeng
- 1] College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China [2] State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xiao-Ting Li
- 1] College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China [2] State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Shuo-Qi Li
- 1] College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China [2] State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Fen Zhang
- 1] College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China [2] State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - En-Hou Han
- National Engineering Center for Corrosion Control, Institute of Metals Research, Chinese Academy of Sciences, Shenyang 110016, China
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Zeng RC. [Clinical observations on 15 cases of spontaneous pneumothorax treated with baihe gujin decoction]. Zhong Xi Yi Jie He Za Zhi 1986; 6:280-9, 260. [PMID: 2943518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Zeng RC. [Labor chart of primipara with cephalic presentation delivered by cesarean section--clinical analysis of 100 cases]. Zhonghua Fu Chan Ke Za Zhi 1983; 18:161-3. [PMID: 6653197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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