UHMWPE-SiC生物摩擦学的特性及机理  

Biological metion Properties and Mechanism of UHMWPE-SiC Ceramics Friction Pair

作　　者：王昌祥[1] 郑昌琼[1] 周馨[1] 尹光福[1] 邓杰[2] 孟永钢[3] 温诗铸[3] 

机构地区：[1]四川联合大学无机材料系,成都610065 [2]四川省机械研究设计院,成都610041 [3]清华大学摩擦学国家重点实验室,北京100084

出　　处：《无机材料学报》1998年第6期877-881,共5页Journal of Inorganic Materials

基　　金：清华大学摩擦学国家重点实验室开放基金

摘　　要：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．The biological friction and wear properties of UHMWPE rubbing against SiC ceramics lubricated with fresh plasma were evaluated by using Falex at 37℃, and the surfaces of the specimenwere observed with SEM and surface profile meter. The results show that the friction coefficient of UHMWPE against SiC is about 0.05, and the wear factor of UHMWPE is lower than8.45×10--10mm3/N.m. The wear loss of SiC ceramics is very small. Based on the results of XPSanalysis, the mechanism was proposed.

关 键 词：聚乙烯 摩擦 碳化硅陶瓷 磨损 人工关节 

分 类 号：R318.17[医药卫生—生物医学工程] TQ174.759[医药卫生—基础医学]