一种新型生物医用Ti-20Zr-10Nb合金的腐蚀、磨损及腐蚀磨损行为  

Corrosion,Wear and Tribocorrosion Behavior of a New Biomedical Ti-20Zr-10Nb Alloy

作　　者：王振国 程曦 刘伟 潘超 李岩[2] 郑自芹 Wang Zhenguo;Cheng Xi;Liu Wei;Pan Chao;Li Yan;Zheng Ziqin(Beijing Chunlizhengda Medical Instruments Co.,Ltd,Beijing 101100,China;School of Materials Science and Engineering,Beihang University,Beijing 100191,China;Yantai Branch of China North Industries Group Corporation No.52 Institute Co.,Ltd,Yantai 264003,China)

机构地区：[1]北京市春立正达医疗器械股份有限公司,北京101100 [2]北京航空航天大学材料科学与工程学院,北京100191 [3]中国兵器工业第五二研究所烟台分所有限责任公司,山东烟台264003

出　　处：《稀有金属材料与工程》2022年第6期1972-1978,共7页Rare Metal Materials and Engineering

基　　金：National Key R&D Program of China(2018YFC1106600)。

摘　　要：通过电化学腐蚀、摩擦学测试以及扫描电镜(SEM)观察等方法,研究了新型生物医用Ti-20Zr-10Nb合金的腐蚀、磨损以及腐蚀磨损行为。动电位极化实验结果表明,与静态腐蚀相比,腐蚀电位(E_(corr))向负值偏移,腐蚀电流密度(i_(corr))增加了2个数量级。磨损和腐蚀磨损结果显示,Ti-20Zr-10Nb合金的磨损体积随载荷的增加而增大。研究结果表明,机械磨损在腐蚀磨损中对材料的流失贡献大于腐蚀的贡献。电化学腐蚀条件下的摩擦系数均低于纯磨损条件下获得的摩擦系数。通过观察腐蚀磨损后的形貌可知,磨粒磨损为腐蚀磨损中的主要磨损机制。此外还验证了磨粒的添加对磨损和腐蚀磨损行为的影响,发现磨粒的添加会增加材料的流失。The corrosion,wear and tribocorrosion behavior of a new biomedical Ti-20Zr-10Nb alloy was investigated using electrochemical measurements,tribological tests and scanning electron microscopy(SEM).Potentiodynamic polarization tests show that the corrosion potential(E_(corr))shifts towards negative values and that the corrosion current density(i_(corr))is increased by two orders of magnitude;these trends differ from those observed with static corrosion.The wear and tribocorrosion results indicate that the wear volume of the Ti-20Zr-10Nb alloy increases with increasing applied load.The contribution of mechanical wear to the material loss of tribocorrosion is greater than that of corrosion.However,the friction coefficients obtained under conditions of electrochemical corrosion are lower than that obtained only under wear.Through observation of the wear crack,it is determined that abrasive wear mechanism is the main mechanism of tribocorrosion.The effect of abrasive particles on the wear and tribocorrosion behavior is considered,and it is found that material loss increases due to particle damage.

关 键 词：生物医用材料 Ti-20Zr-10Nb 腐蚀磨损 磨损 腐蚀 

分 类 号：TG172[金属学及工艺—金属表面处理] R318.08[金属学及工艺—金属学]