人工関節用材料の摩擦摩耗特性に関する接触面圧依存性(機械要素,潤滑,工作,生産管理など)

概要

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The purpose of this study was to examine the dependence of the friction-wear characteristics of artificial joints on contact pressure. Test specimens used were ultra-high molecular weight polyethylene (UHMWPE), Co-Cr-Mo alloy and alumina ceramics in the materials of artificial joints. Lubricating liquid was a water-based liquid that contained the principal constituents of synovial fluid. The wear of UHMWPE sliding against Co-Cr-Mo alloy and alumina ceramics decreased with the increase of contact pressure and indicated dependence on contact pressure. Surface roughness on the rubbed area of Co-Cr-Mo alloy and alumina ceramic discs had a tendency to decrease with the increase of contact pressure. Therefore, it was considered that the dependence on contact pressure was effected by the decrease of surface roughness on the rubbed area of the discs.
2006-05-25