Tribological behaviour of biomedical Ti-Zr-based shape memory alloys

被引：29
作者：
Qu, Wen-Tao [1 ]
Sun, Xu-Guang [1 ]
Yuan, Bi-Fei [1 ]
Li, Kang-Ming [2 ]
Wang, Zhen-Guo [2 ]
Li, Yan [2 ,3 ]
机构：
[1] Xian Shiyou Univ, Sch Mech Engn, Xian 710065, Peoples R China
[2] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[3] Beihang Univ, Key Lab Aerosp Mat & Performance, Minist Educ, Beijing 100191, Peoples R China
来源：
RARE METALS | 2017年 / 36卷 / 06期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Biomedical material; Shape memory alloy; Ti-Zr; Tribology; MECHANICAL-PROPERTIES; TI-25NB-3MO-3ZR-2SN ALLOY; CORROSION BEHAVIOR; WEAR-RESISTANCE; TITANIUM-ALLOYS; NITI; BIOCOMPATIBILITY; STRAIN;
D O I：
10.1007/s12598-017-0882-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The tribological behaviour of Ti-30Zr, Ti-20Zr-10Nb and Ti-19Zr-10Nb-1Fe alloys was investigated using reciprocating friction and wear tests. X-ray diffraction (XRD) results indicate that Ti-30Zr, Ti-20Zr-10Nb and Ti-19Zr- 10Nb-1Fe alloys are composed of hexagonal alpha'-martensite, orthorhombic alpha"-martensite and bcc beta phases, respectively. Ti-30Zr alloy has the highest hardness of HV (273.1 +/- 9.3), while Ti-20Zr-10Nb alloy exhibits the lowest hardness of HV (235.2 +/- 20.4) among all the alloys. The tribological results indicate that Ti-30Zr alloy shows the best wear resistance among these alloys, corresponding to the minimum average friction coefficient of 0.052 and the lowest wear rate of 6.4 X 10(-4) mm(3)center dot N-1 center dot m(-1). Ti-20Zr-10Nb alloy displays better wear resistance than Ti-19Zr-10Nb-1Fe alloy, because the iron oxide is easy to fall off and less Nb2O5 films form on the worn surface of the latter. Delamination and abrasive wear in association with adhesive wear are the main wear mechanism of these alloys.
引用
收藏
页码：478 / 484
页数：7
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