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首页> 外文会议> >Corrosion and tribocorrosion behavior of CoCrMo alloys used as hip joint implant materials under simulated body fluids: Effect of proteins and normal load
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Corrosion and tribocorrosion behavior of CoCrMo alloys used as hip joint implant materials under simulated body fluids: Effect of proteins and normal load

机译：在模拟体液下用作髋关节植入材料的CoCrMo合金的腐蚀和摩擦腐蚀行为：蛋白质和正常负荷的影响

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The release of metal ions and wear debris are raising serious concerns on metal-on-metal (MoM) hip prosthesis. The purpose of this work was to evaluate the corrosion and tribocorrosion behavior, of a low-carbon CoCrMo alloy, as a function of proteins content in the biological fluid and normal applied load. Electrochemical tests were performed to study the corrosion behavior of the alloy, under two simulated body fluids: phosphate buffer solution (PBS) and bovine calf serum (BCS). The tribocorrosion tests were performed using the same solutions, under different loading conditions and tribometer configuration. An attempt was made to evaluate the synergistic interactions between corrosion and wear. The surface characterization of the sample was also studied. The presence of proteins was found to improve the corrosion resistance and passive behavior due to their protective boundary lubricant effect. Normal applied load showed to increase the passive film destruction.
机译：金属离子的释放和磨损碎片引起了金属对金属（MoM）髋关节假体的严重关注。这项工作的目的是评估低碳CoCrMo合金的腐蚀和摩擦腐蚀行为，它是生物流体中蛋白质含量和正常施加负荷的函数。进行了电化学测试以研究合金在两种模拟体液下的腐蚀行为：磷酸盐缓冲溶液（PBS）和牛小牛血清（BCS）。摩擦腐蚀试验是使用相同的溶液，在不同的负载条件和摩擦计配置下进行的。试图评估腐蚀与磨损之间的协同作用。还研究了样品的表面表征。发现蛋白质的存在由于其保护性边界润滑作用而改善了耐腐蚀性和钝化行为。正常施加的载荷显示出增加了钝化膜的破坏。

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