Binary Zn–Ti alloys for orthopedic applications:Corrosion and degradation behaviors,friction and wear performance,and cytotoxicity

作     者：Kun Wang Xian Tong Jixing Lin Aiping Wei Yuncang Li Matthew Dargusch Cuie Wen Kun Wang;Xian Tong;Jixing Lin;Aiping Wei;Yuncang Li;Matthew Dargusch;Cuie Wen

作者机构：Department of Material Engineering.Zhejiang Industry Trade Vocational CollegeWenzhou 325003China Key Laboratory of Materials PhysicsInstitute of Solid State PhysicsChinese Academy of Sciences Heifei230031China School of Materials Science and EngineeringXiangtan University.Xiangtan 411105China School of Engineering.RMIT University.MelbourneVictoria 3001Australia Centre for Advanced Materials Processing and Manufacturing(AMPAM)The University of Queensland.Brisbane.Queensland 4072Australia 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第74卷第15期

页      面：216-229页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the Wenzhou Science and Technology Bureau through the project ZG2019022 and 2018ZG008 financial support for this research by the Australian Research Council(ARC)through the Discovery Project DP170102557 Future Fellowship FT160100252 the support of the ARC Research Hub for Advanced Manufacturing of Medical Devices(IH150100024) 

主　　题：Cytotoxicity Degradation behavior Mechanical property Wear resistance Zn–Ti alloy 

摘      要：Zinc(Zn)and its biocompatible and biodegradable alloys have substantial potential for use in orthopedic ***,pure Zn with a hexagonal close-packed crystal structure has only two independent slip systems,therefore exhibiting extremely low elongation and yield strength in its ascast condition,which restricts its clinical *** this study,as-cast Zn–xTi(titanium)(x=0.05,0.10,0.20,and 0.30 wt.%)binary alloys were hot-rolled and their microstructures,mechanical properties,wear resistance,and cytocompatibility were comprehensively investigated for orthopedic implant *** microstructures of both as-cast and hot-rolled Zn–xTi alloys consisted of anα-Zn matrix phase and a TiZn16 phase,while Zn–0.2 Ti and Zn–0.3 Ti exhibited a finerα-Zn phase due to the grainrefining effect of *** hot-rolled Zn–0.2 Ti alloy exhibited the highest yield strength(144.5 MPa),ultimate strength(218.7 MPa),and elongation(54.2%)among all the Zn–x Ti *** corrosion resistance of Zn–xTi alloys in Hanks’solution decreased with increasing addition of Ti,and the hot-rolled Zn–0.3 Ti alloy exhibited the highest corrosion rates of 432μm/y as measured by electrochemical testing and 57.9μm/y as measured by immersion *** as-cast Zn–xTi alloys showed lower wear losses than their hot-rolled *** extracts of hot-rolled Zn–x Ti alloys at concentrations of≤25%showed no cytotoxicity to MG-63 osteosarcoma cells and the extracts of Zn–xTi alloys exhibited enhanced cytocompatibility with increasing Ti content.