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首页> 外文会议>International Conference on Surface Modification Technologies >Tantalum coatings on CoCrMo alloys for hip and knee joints substitution
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Tantalum coatings on CoCrMo alloys for hip and knee joints substitution

机译：COCRMO合金的钽涂层髋关节和膝关节替代

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摘要

A deposition of tantalum-based coating is performed on CoCrMo alloys, usually used for the substitution of hip and knee joints, in order to enhance their biocompatibility and tribological properties. In fact it is well known that artificial joints are mainly subjected to wear and corrosion that lead to toxic debris formation and metallic ion release, causing inflammatory reaction and osteolysis until to implant failure. Hence tantalum is chosen for its high biocompatibility and excellent wear and corrosion resistance. The deposition method is a thermal process in molten salts producing a thin film coating with a graded and not brittle interface. The thin coatings, presenting a thickness of about 1 μm, are characterized by a multilayer structure of tantalum carbides and/or metallic tantalum, depending on treatment temperature and substrate carbon content. Nanoscale roughness, good hardness increment and high decrement of wear and friction are revealed after coating deposition.
机译：对CocrMo合金进行钽基涂层的沉积，通常用于置换髋关节和膝关节，以提高其生物相容性和摩擦学性质。事实上，众所周知，人工关节主要经过磨损和腐蚀，导致有毒的碎片形成和金属离子释放，导致炎症反应和骨质解析直至植入失效。因此，钽被选中其高生物相容性和优异的磨损和耐腐蚀性。沉积方法是熔融盐的热过程，其产生具有渐变且不脆性界面的薄膜涂层。呈现约1μm的薄涂层，其特征在于钽碳化物和/或金属钽的多层结构，这取决于处理温度和衬底碳含量。涂层沉积后，纳米级粗糙度，良好的硬度增量和磨损的高衰减和摩擦率揭示。

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