不同Ca和Nd含量对Mg-6Al合金腐蚀性能旳影响  

Effects of Different Ca and Nd Addition on Corrosion Resistance of Mg-6Al Alloys

作　　者：张靖[1] 冯义成[1] 王琴[1] 王丽萍[1] 郭二军[1] 

机构地区：[1]哈尔滨理工大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2015年第4期430-433,共4页Special Casting & Nonferrous Alloys

基　　金：黑龙江省自然科学基金资助项目(QC2012C006)

摘　　要：通过扫描电镜(SEM)、浸泡试验、电化学分析等方法,研究了不同Ca和Nd添加量对Mg-6Al合金腐蚀性能旳影响。结果表明,随着Nd、Ca添加量的增加,Mg-6Al合金的耐腐蚀性能都有不同程度的增强。当加入2%的Nd和2%的Ca时,合金的耐蚀性最好,随Nd、Ca含量的继续加入,耐蚀性反而降低。通过浸泡试验发现,pH值变化由快到慢,最后趋于稳定。Effects of different Ca and Nd addition on corrosion resistance of the Mg-6Al alloy were investigated by SEM（scanning electron microscopy）,immersion testing and electro-chemical analysis.The results reveal that with increasing in Ca and Nd addition,corrosion resistance of the Mg-6Al alloy is improved gradually,and with 2% Ca and 2% Nd addition,corrosion resistance of the alloy exhibits desirable.With further increasing in addition,the corrosion resistance is decreased slightly.Immersion testing reveals that change of pH value is firstly rapid and then slow,finally tending to be constant.

关 键 词：MG-AL合金 电化学 腐蚀性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG178[金属学及工艺—金属材料]