Abstract This work reports on the tribocorrosion properties of a CoCrMo alloy sliding under imposed passive potential against alumina in sulfuric acid–glycerol mixtures exhibiting different viscosities and thus, in principle, lubrication properties. As expected, wear accelerated corrosion and friction decreased with increasing glycerol content of the mixture. These results could be successfully rationalized using a recently published tribocorrosion model which considers the interplay of hydrodynamic lubrication with mechanical and chemical deterioration phenomena. The comparison of results with a theoretical model showed that the mixing of glycerol into sulfuric acid aqueous solution promoted lubrication but also that glycerol mechanically weakens the CoCrMo alloy.

中文翻译：

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CoCrMo合金在硫酸-甘油混合物中的摩擦腐蚀

摘要 这项工作报告了 CoCrMo 合金在对氧化铝施加钝化电位下滑动的摩擦腐蚀性能，硫酸-甘油混合物表现出不同的粘度，因此，原则上，润滑性能。正如预期的那样，磨损加速腐蚀和摩擦随着混合物中甘油含量的增加而减少。使用最近发表的摩擦腐蚀模型可以成功地使这些结果合理化，该模型考虑了流体动力润滑与机械和化学劣化现象的相互作用。结果与理论模型的比较表明，甘油与硫酸水溶液的混合促进了润滑，但甘油也会机械削弱 CoCrMo 合金。