超高分子量聚乙烯-SiC 陶瓷摩擦副生物摩擦学特性的研究  

An Investigation of the Bio tribological Properties of UHMWPE SiC Ceramic Pair

作　　者：王昌祥[1] 郑昌琼[1] 冉均国[1] 邓杰[1] 温诗铸 孟永钢 

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

出　　处：《摩擦学学报》1998年第4期332-336,共5页Tribology

基　　金：清华大学摩擦学国家重点实验室资助

摘　　要：用Ｆａｌｅｘ摩擦磨损试验机测定了３７℃下超高分子量聚乙烯（简称ＵＨＭＷＰＥ）与ＳｉＣ陶瓷摩擦副分别在干摩擦、水润滑和血浆润滑下的摩擦学性能，且用扫描电镜观察了摩擦副表面形貌．结果表明：滑动初期的摩擦系数以干摩擦下的最大，血浆润滑下的最小，而滑动２ｋｍ后的摩擦数仍以干摩擦下的最大，但以水润滑下的最小；磨损率以水润滑下的最大，血浆润滑下的最小．采用表面轮廓仪对摩擦磨损前后的ＳｉＣ陶瓷表面进行了测试。The friction and wear properties of UHMWPE rubbing against SiC ceramic under dry sliding and lubrication of fresh plasma or water were evaluated with a Falex machine at 37 ℃. The surfaces of the specimens were observed with SEM and surface profilometer. It was found that the friction coefficient was 0.2 at dry friction, that with lubrication of water or fresh plasma was 0.06 and 0.05,respectively. The wear rate of UHMWPE at dry sliding was 0.845 μm 3/(Nm), that with lubrication of water or fresh plasma was 1.790 μm 3/(Nm) and 0.320 μm 3/(Nm), respectively. At the same time, the wear volume loss of SiC ceramic was negligible.

关 键 词：超高分子量 聚乙烯 陶瓷 生物摩擦学 碳化硅 

分 类 号：R318.08[医药卫生—生物医学工程]