Abstract Fretting-corrosion tests using varying cantilever-shaped contact geometries (representing varying compliances) were performed using Ti-6Al-4V and CoCrMo alloys in combination. Fretting mechanics and fretting corrosion currents were used to determine fretting corrosion regime boundaries between stick, stick-slip, and slip for each interfacial compliance. Results showed a highly-correlated and material-dependent relationship between work of fretting (dissipated energy) and fretting current. A high interfacial compliance reduced relative fretting micromotion, induced stick and stick-slip conditions at lower loads, and were more robust against smaller displacements. Additional alloy-dependent effects were observed. Fretting corrosion maps were developed to characterize each interface's contact conditions over a range of forces and displacements. These results could be used in design-based solutions that encourage head-neck taper locking, minimizing mechanically-assisted corrosion in vivo.

中文翻译：

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全髋关节植入物中模块化锥形接头的兼容界面和微动腐蚀：接触的微观力学

摘要 结合使用 Ti-6Al-4V 和 CoCrMo 合金进行了使用不同悬臂形状接触几何形状（代表不同柔量）的微动腐蚀测试。微动力学和微动腐蚀电流用于确定每个界面柔度的粘着、粘滑和滑动之间的微动腐蚀状态边界。结果显示微动功（耗散能量）和微动电流之间存在高度相关且与材料相关的关系。高界面柔量减少了相对微动微动、在较低负载下引起的粘滞和粘滑条件，并且对较小的位移更稳健。观察到额外的合金依赖效应。开发了微动腐蚀图来表征每个界面' s 在一系列力和位移下的接触条件。这些结果可用于基于设计的解决方案，鼓励头颈锥形锁定，最大限度地减少体内机械辅助腐蚀。