Influence of microstructure of HC CoCrMo biomedical alloys on the corrosion and wear behaviour in simulated body fluids
Influence of microstructure of HC CoCrMo biomedical alloys on the corrosion and wear behaviour in simulated body fluids
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DOI：
10.1016/j.triboint.2010.10.033
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发表时间：
2011-03-01
影响因子：
6.2
通讯作者：
Igual Munoz, Anna
中科院分区：
文献类型：
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作者：
Casaban Julian, Leandre;Igual Munoz, Anna
采用电化学技术分析了铸态高碳CoCrMo合金在不同热处理条件下在模拟体液中的腐蚀和摩擦学行为。在对合金进行微观组织表征后，对样品进行了电化学和摩擦电化学研究。热处理影响腐蚀行为、被动溶解和摩擦学响应。晶界的增加加速了所有溶液中的阳极反应。碳化物体积分数越高，磨损率越低。通过光学显微镜和扫描电镜观察发现，蛋白质的存在改变了碎片的行为。在不含蛋白质的溶液中，颗粒分散在磨损轨道之外，而在蛋白质溶液中，颗粒倾向于在磨损轨道周围聚集和沉积。(C) 2010 Elsevier Ltd.版权所有。
The corrosion and tribological behaviour of an as-cast High Carbon CoCrMo alloy subjected to different thermal treatments in simulated body fluids has been analyzed by electrochemical techniques. After the microstructural characterization of the alloy, the samples were studied electrochemically and tribo-electrochemically. Thermal treatments influence the corrosion behaviour, passive dissolution and tribological response. An increase of grain boundaries accelerates the anodic reaction in all solutions. A higher carbide volume fraction generates a lower wear-rate. Microscopic observation by means of Optical and SEM microscopy showed that presence of proteins modified the debris behaviour. In nonprotein containing solutions particles are dispersed away from the track while in protein solutions particles tend to agglomerate and sediment around the wear track. (C) 2010 Elsevier Ltd. All rights reserved.