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Duan X, Yang Y, Zhang T, Zhu B, Wei G, Li H. Research progress of metal biomaterials with potential applications as cardiovascular stents and their surface treatment methods to improve biocompatibility. Heliyon 2024; 10:e25515. [PMID: 38375258 PMCID: PMC10875388 DOI: 10.1016/j.heliyon.2024.e25515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/23/2024] [Accepted: 01/29/2024] [Indexed: 02/21/2024] Open
Abstract
Facing the growing issue of cardiovascular diseases, metallic materials with higher tensile strength and fatigue resistance play an important role in treating diseases. This review lists the advantages and drawbacks of commonly used medical metallic materials for vascular stents. To avoid post-procedural threats such as thrombosis and in-stent restenosis, surface treatments, and coating methods have been used to further improve the biocompatibility of these materials. Surface treatments including laser, plasma treatment, polishing, oxidization, and fluorination can improve biocompatibility by modifying the surface charges, surface morphology, and surface properties of the material. Coating methods based on polymer coatings, carbon-based coatings, and drug-functional coatings can regulate the surface properties, and also serve as an effective barrier to the interaction of metallic biomaterial surfaces with biomolecules, which can be used to improve corrosion resistance and stability, as well as improve their biocompatibility. Biocompatibility serves as the most fundamental property of cardiovascular stents, and maintaining the excellent and stable biocompatibility of cardiovascular stent surfaces is a current research bottleneck. Few reviews have been published on metallic biomaterials as cardiovascular stents and their surface treatments. For the purpose of advancing research on cardiovascular stents, common metal biomaterials, surface treatment methods, and coating methods to improve biocompatibility and comprehensive properties of the materials are described in this review. Finally, we suggest future directions for stent development, including continuously improving the durability and stability of permanent stents, accelerating the development of biodegradable stents, and strengthening feedback to improve the safety and reliability of cardiovascular stents.
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Affiliation(s)
- Xuejia Duan
- College of Materials and Chemistry, China Jiliang University, Hangzhou, Zhejiang 310018, China
- Division of Chemistry and Analytical Science, National Institute of Metrology, Beijing, China
| | - Yumeng Yang
- College of Materials and Chemistry, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Tianji Zhang
- Division of Chemistry and Analytical Science, National Institute of Metrology, Beijing, China
- Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, China
| | - Benfeng Zhu
- College of Materials and Chemistry, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Guoying Wei
- College of Materials and Chemistry, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Hongmei Li
- Division of Chemistry and Analytical Science, National Institute of Metrology, Beijing, China
- Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, China
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Li Y, Zhou Z, He Y. Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review. MATERIALS (BASEL, SWITZERLAND) 2023; 17:65. [PMID: 38203919 PMCID: PMC10779822 DOI: 10.3390/ma17010065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/28/2023] [Accepted: 12/13/2023] [Indexed: 01/12/2024]
Abstract
Titanium alloy has the advantages of high specific strength, good corrosion resistance, and biocompatibility and is widely used in marine equipment, biomedicine, aerospace, and other fields. However, the application of titanium alloy in special working conditions shows some shortcomings, such as low hardness and poor wear resistance, which seriously affect the long life and safe and reliable service of the structural parts. Tribocorrosion has been one of the research hotspots in the field of tribology in recent years, and it is one of the essential factors affecting the application of passivated metal in corrosive environments. In this work, the characteristics of the marine and human environments and their critical tribological problems are analyzed, and the research connotation of tribocorrosion of titanium alloy is expounded. The research status of surface protection technology for titanium alloy in marine and biological environments is reviewed, and the development direction and trends in surface engineering of titanium alloy are prospected.
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Affiliation(s)
- Yang Li
- School of Nuclear Equipment and Nuclear Engineering, Yantai University, Yantai 264005, China;
| | - Zelong Zhou
- School of Nuclear Equipment and Nuclear Engineering, Yantai University, Yantai 264005, China;
| | - Yongyong He
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
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3
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Pesantez Torres F, Tokranova N, Amodeo E, Bertucci T, Kiehl TR, Xie Y, Cady NC, Sharfstein ST. Interfacing neural cells with typical microelectronics materials for future manufacturing. Biosens Bioelectron 2023; 242:115749. [PMID: 37839350 DOI: 10.1016/j.bios.2023.115749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/01/2023] [Accepted: 10/08/2023] [Indexed: 10/17/2023]
Abstract
The biocompatibility of materials used in electronic devices is critical for the development of implantable devices like pacemakers and neuroprosthetics, as well as in future biomanufacturing. Biocompatibility refers to the ability of these materials to interact with living cells and tissues without causing an adverse response. Therefore, it is essential to evaluate the biocompatibility of metals and semiconductor materials used in electronic devices to ensure their safe use in medical applications. Here, we evaluated the biocompatibility of a collection of diced silicon chips coated with a variety of metal thin films, interfacing them with different cell types, including murine mastocytoma cells in suspension culture, adherent NIH 3T3 fibroblasts, and human induced pluripotent stem cell (iPSC)-derived neural progenitor cells (NPCs). All materials tested were biocompatible and showed the potential to support neural differentiation of iPSC-NPCs, creating an opportunity to use these materials in a scalable production of a range of biohybrid devices such as electronic devices to study neural behaviors and neuropathies.
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Affiliation(s)
- Fernando Pesantez Torres
- Department of Nanoscale Science and Engineering, College of Nanotechnology, Science and Engineering, University at Albany, State University of New York, 257 Fuller Road, Albany, NY, 12203, USA
| | - Natalya Tokranova
- Department of Nanoscale Science and Engineering, College of Nanotechnology, Science and Engineering, University at Albany, State University of New York, 257 Fuller Road, Albany, NY, 12203, USA
| | - Eleanor Amodeo
- Department of Nanoscale Science and Engineering, College of Nanotechnology, Science and Engineering, University at Albany, State University of New York, 257 Fuller Road, Albany, NY, 12203, USA
| | - Taylor Bertucci
- Neural Stem Cell Institute, One Discovery Drive, Rensselaer, NY, 12144, USA
| | - Thomas R Kiehl
- Neural Stem Cell Institute, One Discovery Drive, Rensselaer, NY, 12144, USA
| | - Yubing Xie
- Department of Nanoscale Science and Engineering, College of Nanotechnology, Science and Engineering, University at Albany, State University of New York, 257 Fuller Road, Albany, NY, 12203, USA
| | - Nathaniel C Cady
- Department of Nanoscale Science and Engineering, College of Nanotechnology, Science and Engineering, University at Albany, State University of New York, 257 Fuller Road, Albany, NY, 12203, USA
| | - Susan T Sharfstein
- Department of Nanoscale Science and Engineering, College of Nanotechnology, Science and Engineering, University at Albany, State University of New York, 257 Fuller Road, Albany, NY, 12203, USA.
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Souza AMTDE, Braz JKFDAS, Martins GM, Vitoriano JDEO, G A Neto A, Nery DM, Sabino VG, Lucena EEDES, Rocha HADEO, Barboza CAG, A Júnior C, Moura CEBDE. Comparative analysis of the biocompatibility of endothelial cells on surfaces treated by thermal plasma and cold atmospheric plasma. AN ACAD BRAS CIENC 2023; 95:e20220865. [PMID: 37878908 DOI: 10.1590/0001-3765202320220865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 05/02/2023] [Indexed: 10/27/2023] Open
Abstract
In recent years, cold atmospheric plasma (CAP) is used for surface disinfection. However, little is known about its ability to improve biocompatibility of metallic surfaces when compared to thermal plasma methods. In this context, the study aimed to evaluate the response of human endothelial cells (Ea.hy926) on titanium surfaces treated by non-thermal plasma method and thermal plasma method under nitriding atmosphere. The wettability was characterized by the sessile drop method, the topography and roughness were evaluated by atomic force microscopy (AFM), and the microstructure by grazing angle X-ray diffraction (GIXRD). Endothelial cells were cultured and evaluated for morphology by scanning electron microscopy and viability by an MTT (3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide) assay. CAP treatment reduced the contact angle of the Ti surface (13.43° ± 1.48; p<0.05), increasing hydrophilicity. Rz roughness was higher on the nitrided surface (220.44±20.30; p< 0.001) compared to the CAP treated surfaces (83.29 ± 11.61; p< 0.001) and polished (75.98 ±34.21a); p<0.001). The different applied plasma treatments created different titanium surfaces improving the biocompatibility of endothelial cells, however CAP results demonstrate its potential for biomedical applications, considering the low cost and ease of use of the technique, allowing surface treatments before clinical procedures.
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Affiliation(s)
- Alan Max T DE Souza
- Programa de Pós-Graduação em Saúde e Sociedade, Universidade do Estado do Rio Grande do Norte (UERN), Rua Miguel Antônio da Silva Neto, s/n, Aeroporto, 59607-360 Mossoró, RN, Brazil
| | - Janine Karla F DA Silva Braz
- Universidade Federal do Rio Grande do Norte (UFRN), Escola Multicampi de Ciências Médicas do RN, Av. Cel. Martiniano, 541, 59300-000 Caicó, RN, Brazil
| | - Gabriel M Martins
- Universidade Federal Rural do Semi-árido (UFERSA), Departamento de Ciências Animais, Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
| | - Jussier DE Oliveira Vitoriano
- Universidade Federal Rural do Semi-árido (UFERSA), Laboratório de Plasma Aplicado a Agricultura, Saúde e Meio Ambiente, Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
| | - Aurélio G A Neto
- Universidade Federal do Rio Grande do Norte (UFRN), Escola Multicampi de Ciências Médicas do RN, Av. Cel. Martiniano, 541, 59300-000 Caicó, RN, Brazil
| | - David M Nery
- Universidade Federal do Rio Grande do Norte (UFRN), Escola Multicampi de Ciências Médicas do RN, Av. Cel. Martiniano, 541, 59300-000 Caicó, RN, Brazil
| | - Vladimir G Sabino
- Universidade Federal do Rio Grande do Norte (UFRN), Departamento de Morfologia, Campus Universitário UFRN, Av. Sen. Salgado Filho, 3000, Lagoa Nova, 59078-970 Natal, RN, Brazil
| | - Eudes E DE Souza Lucena
- Programa de Pós-Graduação em Saúde e Sociedade, Universidade do Estado do Rio Grande do Norte (UERN), Rua Miguel Antônio da Silva Neto, s/n, Aeroporto, 59607-360 Mossoró, RN, Brazil
- Universidade Federal do Rio Grande do Norte (UFRN), Escola Multicampi de Ciências Médicas do RN, Av. Cel. Martiniano, 541, 59300-000 Caicó, RN, Brazil
| | - Hugo Alexandre DE Oliveira Rocha
- Universidade Federal do Rio Grande do Norte (UFRN), Departamento de Bioquímica, Campus Universitário UFRN, Av. Sen. Salgado Filho, 3000, Lagoa Nova, 59078-970 Natal, RN, Brazil
| | - Carlos Augusto G Barboza
- Universidade Federal do Rio Grande do Norte (UFRN), Departamento de Morfologia, Campus Universitário UFRN, Av. Sen. Salgado Filho, 3000, Lagoa Nova, 59078-970 Natal, RN, Brazil
| | - Clodomiro A Júnior
- Universidade Federal Rural do Semi-árido (UFERSA), Laboratório de Plasma Aplicado a Agricultura, Saúde e Meio Ambiente, Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
| | - Carlos Eduardo B DE Moura
- Universidade Federal Rural do Semi-árido (UFERSA), Departamento de Ciências Animais, Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
- Universidade Federal Rural do Semi-árido (UFERSA), Laboratório de Plasma Aplicado a Agricultura, Saúde e Meio Ambiente, Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
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Li Y, Pavanram P, Bühring J, Rütten S, Schröder KU, Zhou J, Pufe T, Wang LN, Zadpoor AA, Jahr H. Physiomimetic biocompatibility evaluation of directly printed degradable porous iron implants using various cell types. Acta Biomater 2023; 169:589-604. [PMID: 37536493 DOI: 10.1016/j.actbio.2023.07.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 07/04/2023] [Accepted: 07/27/2023] [Indexed: 08/05/2023]
Abstract
Additively manufactured (AM) degradable porous metallic biomaterials offer unique opportunities for satisfying the design requirements of an ideal bone substitute. Among the currently available biodegradable metals, iron has the highest elastic modulus, meaning that it would benefit the most from porous design. Given the successful preclinical applications of such biomaterials for the treatment of cardiovascular diseases, the moderate compatibility of AM porous iron with osteoblast-like cells, reported in earlier studies, has been surprising. This may be because, as opposed to static in vitro conditions, the biodegradation products of iron in vivo are transported away and excreted. To better mimic the in situ situations of biodegradable biomaterials after implantation, we compared the biodegradation behavior and cytocompatibility of AM porous iron under static conditions to the conditions with dynamic in situ-like fluid flow perfusion in a bioreactor. Furthermore, the compatibility of these scaffolds with four different cell types was evaluated to better understand the implications of these implants for the complex process of natural wound healing. These included endothelial cells, L929 fibroblasts, RAW264.7 macrophage-like cells, and osteoblastic MG-63 cells. The biodegradation rate of the scaffolds was significantly increased in the perfusion bioreactor as compared to static immersion. Under either condition, the compatibility with L929 cells was the best. Moreover, the compatibility with all the cell types was much enhanced under physiomimetic dynamic flow conditions as compared to static biodegradation. Our study highlights the importance of physiomimetic culture conditions and cell type selection when evaluating the cytocompatibility of degradable biomaterials in vitro. STATEMENT OF SIGNIFICANCE: Additively manufactured (AM) degradable porous metals offer unique opportunities for the treatment of large bony defects. Despite the successful preclinical applications of biodegradable iron in the cardiovascular field, the moderate compatibility of AM porous iron with osteoblast-like cells was reported. To better mimic the in vivo condition, we compared the biodegradation behavior and cytocompatibility of AM porous iron under static condition to dynamic perfusion. Furthermore, the compatibility of these scaffolds with various cell types was evaluated to better simulate the process of natural wound healing. Our study suggests that AM porous iron holds great promise for orthopedic applications, while also highlighting the importance of physio-mimetic culture conditions and cell type selection when evaluating the cytocompatibility of degradable biomaterials in vitro.
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Affiliation(s)
- Y Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Department of Biomechanical Engineering, Delft University of Technology, Delft 2628CD, the Netherlands.
| | - P Pavanram
- Institute of Anatomy and Cell Biology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - J Bühring
- Institute of Structural Mechanics and Lightweight Design, RWTH Aachen University, 52062 Aachen, Germany
| | - S Rütten
- Institute of Pathology, Electron Microscopy Unit, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - K-U Schröder
- Institute of Structural Mechanics and Lightweight Design, RWTH Aachen University, 52062 Aachen, Germany
| | - J Zhou
- Department of Biomechanical Engineering, Delft University of Technology, Delft 2628CD, the Netherlands
| | - T Pufe
- Institute of Anatomy and Cell Biology, University Hospital RWTH Aachen, Aachen 52074, Germany
| | - L-N Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - A A Zadpoor
- Department of Biomechanical Engineering, Delft University of Technology, Delft 2628CD, the Netherlands
| | - H Jahr
- Institute of Anatomy and Cell Biology, University Hospital RWTH Aachen, Aachen 52074, Germany.; Institute of Structural Mechanics and Lightweight Design, RWTH Aachen University, 52062 Aachen, Germany.
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Budi HS, Anitasari S, Shen YK, Tangwattanachuleeporn M, Nuraini P, Setiabudi NA. Novel Application of 3D Scaffolds of Poly(E-Caprolactone)/Graphene as Osteoinductive Properties in Bone Defect. Eur J Dent 2023; 17:790-796. [PMID: 36351454 PMCID: PMC10569855 DOI: 10.1055/s-0042-1755550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE Scaffolds provided a surface on which cells could attach, proliferate, and differentiate. Nowadays, bone tissue engineering offers hope for treating bone cancer. Poly(e-caprolactone) (PCL)/graphene have capability as an osteogenic and regenerative therapy. It could be used to produce bone tissue engineering scaffolds. The purpose of this study was to investigate the ability of PCL/graphene to enhance the osteoinductive mechanism. MATERIALS AND METHODS The PCL/graphene scaffold was developed utilizing a particulate-leaching process and cultured with osteoblast-like cells MG63 at 0.5, 1.5, and 2.5 wt% of graphene. We evaluated the porosity, pore size, migratory cells, and cell attachment of the scaffold. STATISTICAL ANALYSIS Data was expressed as the mean ± standard error of the mean and statistical analyses were performed using one-way analysis of variance and Tukey's post hoc at a level of p-value < 0.05. RESULTS Porosity of scaffold with various percentage of graphene was nonsignificant (p > 0.05). There were differences in the acceleration of cell migration following wound closure between groups at 24 hours (p < 0.01) and 48 hours (p < 0.00). Adding the graphene on the scaffolds enhanced migration of osteoblast cells culture and possibility to attach. Graphene on 2.5 wt% exhibited good characteristics over other concentrations. CONCLUSION This finding suggests that PCL/graphene composites may have potential applications in bone tissue engineering.
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Affiliation(s)
- Hendrik Setia Budi
- Department of Oral Biology, Dental Pharmacology, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Silvia Anitasari
- Department of Dental Material and Devices, Dentistry Program, Faculty of Medicine, Universitas Mulawarman, Samarinda, Indonesia
- Department Medical Microbiology, Medical Program, Faculty of Medicine, Universitas Mulawarman, Samarinda, Indonesia
| | - Yung-Kang Shen
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Marut Tangwattanachuleeporn
- Faculty of Allied Health Sciences, Burapha University, Chon Buri, Thailand
- Research Unit for Sensor Innovation, Burapha University, Chon Buri, Thailand
| | - Prawati Nuraini
- Department of Pediatric Dentistry, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
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Zhang L, Shao M, Zhang Z, Yi X, Yan J, Zhou Z, Fang D, He Y, Li Y. Corrosion Behavior of Nitrided Layer of Ti6Al4V Titanium Alloy by Hollow Cathodic Plasma Source Nitriding. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2961. [PMID: 37109798 PMCID: PMC10141753 DOI: 10.3390/ma16082961] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 04/05/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
Ti6Al4V titanium alloys, with high specific strength and good biological compatibility with the human body, are ideal materials for medical surgical implants. However, Ti6Al4V titanium alloys are prone to corrosion in the human environment, which affects the service life of implants and harms human health. In this work, hollow cathode plasm source nitriding (HCPSN) was used to generate nitrided layers on the surfaces of Ti6Al4V titanium alloys to improve their corrosion resistance. Ti6Al4V titanium alloys were nitrided in NH3 at 510 °C for 0, 1, 2, and 4 h. The microstructure and phase composition of the Ti-N nitriding layer was characterized by high-resolution transmission electron microscopy, atomic force microscopy, scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. This modified layer was identified to be composed of TiN, Ti2N, and α-Ti (N) phase. To study the corrosion properties of different phases, the nitriding 4 h samples were mechanically ground and polished to obtain the various surfaces of Ti2N and α-Ti (N) phases. The potentiodynamic polarization and electrochemical impedance measurements were conducted in Hank's solution to characterize the corrosion resistance of Ti-N nitriding layers in the human environment. The relationship between corrosion resistance and the microstructure of the Ti-N nitriding layer was discussed. The new Ti-N nitriding layer that can improve corrosion resistance provides a broader prospect for applying Ti6Al4V titanium alloy in the medical field.
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Affiliation(s)
- Lei Zhang
- School of Electromechanical Automobile Engineering, Yantai University, Yantai 264005, China
| | - Minghao Shao
- School of Electromechanical Automobile Engineering, Yantai University, Yantai 264005, China
| | - Zhehao Zhang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Xuening Yi
- Department of Nuclear Equipment, Yantai University, Yantai 264005, China
| | - Jiwen Yan
- Department of Nuclear Equipment, Yantai University, Yantai 264005, China
| | - Zelong Zhou
- Department of Nuclear Equipment, Yantai University, Yantai 264005, China
| | - Dazhen Fang
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Yongyong He
- State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
| | - Yang Li
- Department of Nuclear Equipment, Yantai University, Yantai 264005, China
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Wei X, Zhang Y, Feng H, Cao X, Ding Q, Lu Z, Zhang G. Bio-Tribology and Corrosion Behaviors of a Si- and N-Incorporated Diamond-like Carbon Film: A New Class of Protective Film for Ti6Al4V Artificial Implants. ACS Biomater Sci Eng 2022; 8:1166-1180. [PMID: 35195404 DOI: 10.1021/acsbiomaterials.1c01370] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ti6Al4V artificial implants are increasingly demanded for addressing human dysfunction caused by an aging population and major diseases. However, they are restricted due to the release of vanadium and aluminum ions in the process of corrosion and wear. This work is aimed to provide a protective film for Ti6Al4V artificial implants, and then, a Si-incorporated diamond-like carbon (Si-DLC) film and Si- and N-incorporated DLC (SiN-DLC) film were deposited on the surface of Ti6Al4V by plasma-enhanced chemical vapor deposition. Results suggest that the thickness of the as-deposited DLC film is approximately 2 μm, and the SiN-DLC film shows the lowest surface roughness (53.0 ± 3.6 nm) compared with the Ti6Al4V and DLC films. The above DLC film possesses high mechanical properties compared with Ti6Al4V, and the SiN-DLC film shows the best resistance to plastic deformation. In addition, the DLC film exhibits high adhesive strength (>13 N) with Ti6Al4V, which is a prerequisite for service in liquid environments. Whether in SBF solution or SBF + BSA solution, the friction coefficient and wear rate of the above DLC film are much lower than those of Ti6Al4V, and the SiN-DLC film displays the optimal tribological properties (0.072 and 1.82 × 10-7 mm3·N-1·m-1, respectively). Moreover, Si-DLC and SiN-DLC films possess similar corrosion resistance but are far better than Ti6Al4V. Cytotoxicity test results show that the SiN-DLC film can significantly improve cell viability and promote cell proliferation to a certain extent. Consequently, the SiN-DLC film is a protective film with more potential for artificial implants.
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Affiliation(s)
- Xubing Wei
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yujue Zhang
- Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng 252000, P. R. China.,Beijing Advanced Innovation Centre for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Haiyan Feng
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xueqian Cao
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Qi Ding
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Zhibin Lu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guangan Zhang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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