中文摘要：

采用球/平面接触方式,进行纯钛（TA2/TA2）在Hank’s溶液和生理盐水中的常温切向和径向复合微动腐蚀实验。实验接触角θ为45o,最大径向载荷Fmax为100、200和300N,微动循环周次为5×104次。在摩擦动力学分析和耗散能计算分析基础上,用扫描电镜（SEM）和激光共焦扫描显微镜（LCSM）测定了磨损量,分析磨损机制。结果表明：在Hank’s溶液和生理盐水中,复合微动F—D曲线呈现准梯形和椭圆形二阶段特征;相同载荷条件下,TA2在Hank’s溶液中材料损失量比在生理盐水中小,这与在相同条件下Hank’s溶液中的耗散能比在生理盐水中小的结果一致。在二种介质条件下,TA2的复合微动磨损主要以磨粒磨损和剥层方式进行。

英文摘要：

The dual-motion fretting corrosion tests of pure titanium （TA2） fiats against TA2 ball were carrtect out m Hank＇s and saline solutions by a hydraulic fretting tester. During the tests, the contact angle of two fretting pairs was set to 45°, the .applied normal load was varied from 100 N to 300 N, and the number of fretting cycles was 5 × 10^4. The kinetic behaviours of the dual-motion fretting of TA2/TA2 pairs were analyzed. The fretting damages on the TA2 plate were characterized through optical microscope and scanning electrical microscope （SEM）. The results indicate that the F -D curves of TA2/TA2 pairs present two types of shapes, i.e. the trapezoidal and elliptical. The volume-loss of TA2 plate is smaller in Hank＇s solution than that of in saline solution, which is consistent with the analyses of friction dissipation energy. The fretting wear mechanisms of TA2 plate are mainly identified as abrasive wear and delamination mechanism in both media.