钛合金微弧氧化陶瓷膜的生物摩擦磨损性能  

Biotribological behaviors of micro-arc oxidation ceramic layer on titanium alloy

作　　者：徐玲利[1] 史兴岭[1] 朱治愿[1] 

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003

出　　处：《材料热处理学报》2015年第11期162-166,共5页Transactions of Materials and Heat Treatment

基　　金：江苏高校优势学科建设工程资助项目

摘　　要：利用微弧氧化技术,采用甘油磷酸钙和乙酸钙混合电解液体系,在Ti6A14V钛合金表面制备了富含Ca,P元素的多孔陶瓷膜,研究了微弧氧化陶瓷层的摩擦学性能。在25%小牛血清润滑条件下,与Si3N4陶瓷球的滑动摩擦实验结果显示,微弧氧化处理使磨损率降低了近一个数量级,表明微弧氧化膜层具有良好的耐磨损性能;与牛骨的微动摩擦实验结果显示,微弧氧化陶瓷层的摩擦系数高于Ti6A14V,而且位移振幅越大摩擦系数越高,说明微弧氧化处理能有效阻止植入假体与骨组织之间的微动。Ceramic film containing calcium and phosphorus on Ti6Al4 V alloy was prepared by micro-arc oxidation（ MAO） in Ca C3H5（ OH）2PO4-Ca（ CH3COO）2aqueous solution and its biotribological behavior was analyzed. The friction experimental results of the oxide film siding against Si3N4 ceramic ball under 25% calf bovine serum lubrication indicate that the friction coefficient of the MAO film is higher than that of the bare Ti6Al4 V alloy,but the wear rate decreases by nearly one order of magnitude. Those results show that MAO ceramic film exhibits good anti-wear property. The experimental results of the MAO ceramic films fretting against bovine bone under 25%calf bovine serum lubrication show that the friction coefficients of MAO ceramic films are obviously higher than those of Ti6A14 V alloy and they increase significantly with the increase of the amplitude,showing a possibility of prohibiting micro-motion between implants and human bone.

关 键 词：钛合金 微弧氧化 生物摩擦 摩擦机理 

分 类 号：TG146.2[一般工业技术—材料科学与工程]