Department of Mechanical Engineering, University of Strathclyde, 75 Montrose St., Glasgow G1 1XJ, UK; Department of Biomedical Engineering, University of Strathclyde, Wolfson Centre, 106 Rottenrow, Glasgow G4 0NW, UK.
Department of Mechanical Engineering, University of Strathclyde, 75 Montrose St., Glasgow G1 1XJ, UK.
Mater Sci Eng C Mater Biol Appl. 2015 Apr;49:452-462. doi: 10.1016/j.msec.2015.01.004. Epub 2015 Jan 7.
Wear maps were developed following a series of micro-abrasion-corrosion testing during idealised hip contact conditions for a CoCrMo alloy in a foetal calf serum solution. The main aim of the study was to characterise wear-corrosion or bio-tribocorrosion regimes of the alloy over a range of applied loads and applied potentials. The transitioning micro-abrasion-corrosion mechanisms, synergisms and wastage behaviours in the presence of additional abrasive particles were identified and mapped. Wear maps in earlier work show the wear-corrosion transitions of CoCrMo alloy in the absence of abrasive particles for similar conditions; the wear maps developed in this work were compared. Mapping the micro-abrasion-corrosion regimes indicated that proteins present in foetal calf serum solution, resulting in development of a graphitic tribo-layer, may play a critical role in enhancing or protecting against tribo-corrosive degradation.
磨损图谱是在模拟髋关节接触条件下，对 CoCrMo 合金进行一系列微磨损-腐蚀试验后开发的。该研究的主要目的是在一定的加载和电位条件下，对合金的磨损-腐蚀或生物摩擦腐蚀区域进行特征描述。研究中还识别和绘制了在存在额外磨料颗粒的情况下，微磨损-腐蚀转化机制、协同作用和损耗行为。早期工作中的磨损图谱显示了在类似条件下不存在磨料颗粒时 CoCrMo 合金的磨损-腐蚀转变；本工作中开发的磨损图谱进行了比较。图谱绘制表明，胎牛血清溶液中存在的蛋白质可能会形成石墨摩擦层，从而在增强或防止摩擦腐蚀降解方面发挥关键作用。
