Corrosion of Mg-Li Alloy in Solution of Simulating Human Body Fluid
摘 要
采用电化学方法研究了镁锂合金在模拟人体体液中的腐蚀行为, 采用扫描电镜观察了腐蚀后的表面形貌, 并用失重法研究了腐蚀速率。结果表明, 镁锂合金的腐蚀属于析氢腐蚀, 随腐蚀时间的增加, 阳极活性溶解受到抑制。镁锂合金在模拟人体体液中的电化学反应电阻比在pH=7的3.5% NaCl溶液中的电化学反应电阻高20多倍。腐蚀24 h后, 镁锂合金表面变黑, 仍有大面积没有被腐蚀的区域, 腐蚀区域内蚀坑数量较多, 但腐蚀坑小而浅。
Abstract
The corrosion behavior of Mg-Li alloy in simulating human body fluid solution was investigated by electrochemical methods. The corrosion morphology was analyzed by SEM, and the average corrosion rate was detected by weight loss method. The results showed that the corrosion of Mg-Li alloy was hydrogen corrosion; with the increase of time, the corrosion of Mg-Li alloy was restricted. The electrochemical reaction resistance was 20 times larger than that of Mg-Li alloy in 3.5% NaCl solution of pH=7. After 24 hours corrosion, there were still many areas not corroded in the surface; the corrosion surface of Mg-Li alloy became black and there were many small and shallow corrosion pits on it.
中图分类号 TG172
所属栏目 试验研究
基金项目 黑龙江省博士后基金(LBH-Z06010)
收稿日期 2010/12/6
修改稿日期 2010/12/29
网络出版日期
作者单位点击查看
备注黄晓梅, 讲师, 博士,
引用该论文: HUANG Xiao-mei,WANG Yan-yan,LIU Sa. Corrosion of Mg-Li Alloy in Solution of Simulating Human Body Fluid[J]. Corrosion & Protection, 2011, 32(10): 785
被引情况:
【1】吴楠,赵红阳,顾婷婷, "AZ31镁合金表面沉积类金刚石薄膜在Hank′s体液中的腐蚀行为",腐蚀与防护 35, 725-728(2014)
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