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为了探索超高分子量聚乙烯(UHMWPE)与碳化硅(SiC)陶瓷组合作为人工关节置换材料的可能性,利用Falex摩擦磨损实验机测定了37℃下UHMWPE与SiC陶瓷摩擦副在血浆润滑条件下的生物摩擦学性能.结果表明,UHMWPE-SiC摩擦副的摩擦系数为0.05;UHMWPE的磨损系数<8.45×10-10mm3/N.m.表面轮廓仪对磨损前后SiC陶瓷表面进行测试,未发现明显变化,说明SiC陶瓷磨损甚微.根据XPS分析结果;提出了生物摩擦磨损机理.
In order to explore the possibility of combining ultra-high molecular weight polyethylene (UHMWPE) and silicon carbide (SiC) ceramics as a prosthetic joint replacement material, the Falex friction and wear testing machine was used to measure the friction between UHMWPE and SiC ceramic friction pairs under plasma lubrication at 37 ℃ Biological tribological properties. The results show that the friction coefficient of UHMWPE-SiC friction pair is 0.05 and the wear coefficient of UHMWPE is less than 8.45 × 10-10mm3 / N.m. Surface profilometer before and after wear on the SiC ceramic surface test, no significant change was found, indicating little wear SiC ceramics. According to XPS analysis results, biological friction and wear mechanism was proposed.