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.
出处
《科技导报》
CAS
CSCD
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)
关键词
热处理
耐腐蚀性
电化学
正交试验法
heat treatment, corrosion resistance, electrochemical, orthogonal experiment
