Tribo-corrosion mechanisms and electromechanical behaviours for metal implants materials of CoCrMo,Ti6Al4V and Ti15Mo alloys

作     者：Hongxiang Wang Jingjing Zheng Xiaolei Sun Yong Luo 

作者机构：Jiangsu Vocational College of Electronics and InformationHuai'anChina School of Materials Science and PhysicsChina University of Mining&TechnologyXuzhouChina 

出 版 物：《Biosurface and Biotribology》 (生物表面与生物摩擦学（英文）)

年 卷 期：2022年第8卷第1期

页      面：44-51页

核心收录：

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：National Natural Science Foundation of China,Grant/Award Number:51875563 The Tribology Science Found of State Key Laboratory of Tribology,Grant/Award Number:SKLTKF19A03。 

主　　题：artificial joints biomaterials wear mechanisms 

摘      要：Corrosion and wear play significant roles in the aseptic loosening of artificial hip joints for the long-term service.In this present study,tribo-corrosion tests were carried out through a reciprocating ball-on-plate system to evaluate the corrosion and wear prop-erties of CoCrMo,Ti6Al4V and Ti15Mo alloys in a simulated body fluid(SBF)solution.It was found that the tribo-corrosion behaviours of CoCrMo/Al_(2)O_(3)and Ti15Mo/Al_(2)O_(3)systems had significant wear-corrosion synergistic interaction,and wear-induced corro-sion was dominant.For Ti6Al4V/Al_(2)O_(3)systems,their wear mechanism under SBF lubrication was a combination of abrasive,adhesive and fatigue wear.While the wear mechanism of the Ti15Mo/Al_(2)O_(3)system under synergistic interaction was a combination of abrasive and adhesive wear.Finally,it was suggested that the Ti15Mo alloy would be the better alternative for metal implant applications compared with the CoCrMo alloy for the consideration of both wear and potential poisonous ions such as Co(III)and Cr(VI).