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Microstructural characterisation of a plasma carburised low carbon Co-Cr alloy

机译:等离子渗碳低碳Co-Cr合金的显微组织表征

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摘要

One of the major concerns over long term metal on metal articulations is the carcinogenic effect of metal particles. How to improve the surface hardness and wear resistance of Co-Cr-Mo alloys and thus extend the life span of the metal on metal joint prostheses is a timely task from both a scientific and clinical viewpoint. The present investigation indicated that plasma carburising a Co-Cr alloy between 400 and 600°C can produce a hardened layer on the surface which can significantly improve its wear resistance. Detailed structural, composition and microstructural characterisation have advanced the scientific understanding of the hardening effect. This is the first report that S phase can be formed in Co-Cr alloys during low temperature plasma carburising.
机译:长期金属对金属接合的主要关注之一是金属颗粒的致癌作用。从科学和临床的角度来看,如何提高Co-Cr-Mo合金的表面硬度和耐磨性,从而延长金属在金属接头假体上的寿命是一个及时的任务。本研究表明,在400至600℃之间对Co-Cr合金进行等离子渗碳可在表面上产生硬化层,从而可显着提高其耐磨性。详细的结构,成分和微观结构表征已经对硬化效果有了科学认识。这是关于低温等离子渗碳过程中钴铬合金中可能形成S相的第一个报道。

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