激光选区熔化医用钴铬钼合金的摩擦性能  

Tribological Performance of Medical CoCrMo Alloy Fabricated by Selective Laser Melting

作　　者：林辉[1] 杨永强[1] 张国庆[1] 宋长辉[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《光学学报》2016年第11期151-161,共11页Acta Optica Sinica

基　　金：国家自然科学基金仪器专项(81327001);国家自然科学基金(51275179);广东省对外科技合作项目(2012B050100013)

摘　　要：采用激光选区熔化(SLM)技术成型CoCrMo合金标准样件,并将SLM成型的CoCrMo合金和铸造CoCrMo合金分别与超高分子量聚乙烯(UHMWPE)样件配副进行摩擦磨损实验。实验结果表明,在干摩擦、生理盐水、人工唾液和小牛血清4种润滑条件下,SLM成型的CoCrMo合金摩擦系数均小于铸造CoCrMo合金。另外,不同润滑条件下,SLM成型的CoCrMo/UHMWPE和铸造CoCrMo/UHMWPE的磨损机理不同。Selective laser melting（SLM）technology is used to fabricate the CoCrMo alloy standard specimen.With the casted CoCrMo alloy and SLM manufactured CoCrMo alloy respectively combined with the ultrahigh molecular weight polyethylene（UHMWPE）,the wear-resistance experiment is conducted.The experiments show that,under the four kind of lubrication conditions including dry friction,physiological saline,artificial saliva,and calf serum,the friction coefficient of the SLM manufactured CoCrMo alloy is always less than that of casted CoCrMo alloy.In addition,under different lubrication conditions,the wear mechanisms of the SLM manufactured CoCrMo/UHMWPE and the casted CoCrMo/UHMWPE are different.

关 键 词：激光技术 激光选区熔化 钴铬钼合金 润湿性能 金相组织 表面微观形貌 摩擦性能 

分 类 号：TG146[一般工业技术—材料科学与工程]