摘要
采用UMT-2多功能摩擦磨损试验机和电化学工作站(CHI614E)摩擦腐蚀试验平台,考察了医用CoCrMo合金在生理盐水润滑条件下的摩擦腐蚀行为,利用扫描电镜观察了CoCrMo合金在摩擦腐蚀之后的形貌特征。结果表明,随着载荷的增大,CoCrMo合金摩擦腐蚀后的腐蚀电位降低,腐蚀电流增大。摩擦腐蚀的摩擦因数均大于纯摩擦因数,且随载荷的增加而减小。摩擦腐蚀的磨损破坏比纯摩擦严重,磨损机理主要表现为犁沟磨损和剪切塑变造成的局部剥落。
The tribocorrosion behavior of CoCrMo alloy in physiological saline solution was investigated by UMT-2multi-functional wear tester and electrochemical workstation（CHI614E）.The morphology of CoCrMo alloy was analyzed by scanning electron microscopy after tribocorrosion.The results show that the corrosion potential of CoCrMoalloy decreases,however,the corrosion current increases with the increase of applied loads.Under different applied load conditions,the friction coefficients of tribocorrosion are higher than the pure friction coefficients.With the increase of applied loads,the friction coefficients of tribocorrosion decrease.The wear surface damage of tribocorrosion is more serious than the pure friction.The main wear mechanism is ploughing wear and local spalling caused by the shear deformation.
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2016年第2期43-48,共6页
China Surface Engineering
基金
国家自然科学基金(51275514)
清华大学摩擦学国家重点实验室开放基金(SKLTKF11A03)
关键词
CoCrMo合金
摩擦腐蚀
关节材料
生理盐水
CoCrMo alloy
tribocorrosion
artificial joint material
physiological saline
