摘要
采用TE66微磨粒磨损实验机对医用Ti-6Al-4V钛合金在不同摩擦副条件下的微磨粒磨损行为进行研究,考察滑行距离、载荷对其微磨粒磨损的影响,通过观察磨斑形貌,分析其磨损机制。研究结果表明:Ti-6Al-4V合金的磨损量随滑移距离和载荷增加而增加,磨损率则相反,并且硬度较高的Si3N4陶瓷球对合金造成的磨损量和磨损率均低于ZrO2陶瓷球;在不同摩擦副条件下,随着滑行距离和载荷的增加,Ti-6Al-4V合金的磨损机制均由三体磨损转变为二三体混合磨损,所不同的是与Si3N4陶瓷球对摩时合金的混合磨损区域要少于与ZrO2陶瓷球对摩时。
The micro-scale abrasive wear behaviour of the medical Ti-6Al-4V titanium alloy was studied by the TE66 micro-scale abrasion machine. The influence of sliding distance and load on micro-scale abrasive wear behaviour of Ti-6Al-4V titanium alloy was investigated,and the wear mechanism was analyzed through observing the wear scar morphology. The experimental results indicate that the wear volume of Ti-6Al-4V alloy is increased with the increase of sliding distance and load,and the wear rate is reverse. The wear rate of Ti-6Al-4V alloy is lower when rubbing with Si3N4 ball of high hardness than with ZrO2 ball of low hardness. The wear mechanism of Ti-6Al-4V alloy is turned into mixed wear of two body and three body from three body wear along with the increasing of sliding distance and load,and the area of mixed wear is greater when rubbing with ZrO2 ball than with Si3N4 ball.
出处
《润滑与密封》
CAS
CSCD
北大核心
2014年第7期88-92,共5页
Lubrication Engineering
基金
国家自然科学基金项目(50405005)
