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Metal-Driven Autoantifriction Function of Artificial Hip Joint.
Deng, Qiaoyuan; Feng, Qingguo; Jing, Peipei; Ma, Donglin; Li, Mengting; Gong, Yanli; Li, Yantao; Wen, Feng; Leng, Yongxiang.
Afiliação
  • Deng Q; Institute of Biomedical Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China.
  • Feng Q; Key Laboratory of Advanced Material of Tropical Island Resources of Educational Ministry, School of Materials Science and Engineering, Hainan University, Haikou, Hainan, 570228, China.
  • Jing P; Institute of Biomedical Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China.
  • Ma D; Institute of Biomedical Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China.
  • Li M; College of Physics and Engineering, Chengdu Normal University, Chengdu, Sichuan, 611130, China.
  • Gong Y; Hainan Provincial Fine Chemical Engineering Research Center, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan, 570228, P. R. China.
  • Li Y; Institute of Biomedical Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China.
  • Wen F; Institute of Biomedical Engineering, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China.
  • Leng Y; Key Laboratory of Advanced Material of Tropical Island Resources of Educational Ministry, School of Materials Science and Engineering, Hainan University, Haikou, Hainan, 570228, China.
Adv Sci (Weinh) ; 10(25): e2301095, 2023 09.
Article em En | MEDLINE | ID: mdl-37409439
ABSTRACT
The service life of an artificial hip joint is limited to 10-15 years, which is not ideal for young patients. To extend the lifespan of these prostheses, the coefficient of friction and wear resistance of metallic femoral heads must be improved. In this study, a Cu-doped titanium nitride (TiNX -Cu) film with "autoantifriction" properties is deposited on a CoCrMo alloy via magnetron sputtering. When delivered in a protein-containing lubricating medium, the Cu in TiNX -Cu quickly and consistently binds to the protein molecules in the microenvironment, resulting in the formation of a stable protein layer. The proteins adsorbed on the TiNX -Cu surface decompose into hydrocarbon fragments owing to the shear stress between the Al2 O3 /TiNX -Cu tribopair. The synergistic effect of the catalysis of Cu and shear stress between the Al2 O3 /TiNX -Cu tribopair transforms these fragments into graphite-like carbon tribofilms with an antifriction property. These tribofilms can simultaneously reduce the friction coefficient of the Al2 O3 /TiNX -Cu tribopair and enhance the wear resistance of the TiNX -Cu film. Based on these findings, it is believed that the autoantifriction film can drive the generation of antifriction tribofilms for lubricating and increasing the wear resistance of prosthetic devices, thereby prolonging their lifespan.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Metais Limite: Humans Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Metais Limite: Humans Idioma: En Ano de publicação: 2023 Tipo de documento: Article