医用纯镁的热处理试验研究  

Heat Treatment Research on Pure Magnesium for Biomaterial Application

作　　者：谭小伟[1] 高家诚[1] 王勇[1] 乔丽英[1] 伍沙[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《科技导报》2006年第2期67-69,共3页Science & Technology Review

基　　金：重庆市科技攻关重大专项(CSPC;2004AA4003)

摘　　要：镁及镁合金作为硬组织植入材料已引起了越来越多学者的关注。报道了用热处理改善纯镁在人体环境中的耐腐蚀性能的试验研究结果。通过微机电化学分析系统,测试了纯镁热处理前后在模拟体液中的电化学腐蚀速率,并结合正交试验对热处理工艺参数进行了优化。结果表明,在本试验条件下,773K×14h热处理能明显地改善纯镁在体液中的耐腐蚀性能,腐蚀电流密度由3.5116×10-3mA/cm2降到9.8593×10-5mA/cm2。Magnesium and its alloy as hard tissue implants have attracted more and more attention. This paper reports that heat treatment can improve the corrosion resistance of pure magnesium in simulated body fluid environment. Micro-electrochemical analysis system is used to test the corrosion rate of pure magnesium and orthogonal experiment is also used to optimize the parameters of heat treatment process. The results indicate that under condition of this experiment, the heat treatment with 773 Kx14 h can effectively improve the corrosion behavior of pure magnesium in simulated body fluid, and the corrosion current density can reduce from 3.5 116×10^-3 mM/cm^2 to 9.8 593×10^-5 mM/cm^2.

关 键 词：热处理 耐腐蚀性 电化学 正交试验法 

分 类 号：R318.08[医药卫生—生物医学工程]