摘要
通过浸泡腐蚀试验,研究了不同锑含量的Mg-6Al合金在模拟低浓度氯盐环境中的腐蚀速率,采用光学显微镜和扫描电镜观察其表面腐蚀产物的微观形貌.结果表明:随着锑元素质量分数从0.5%增加到1.5%,Mg-6Al合金的腐蚀速率先减小后增大,合金的晶粒尺寸先减小后增大,其表面腐蚀产物先减少后逐渐增多;当锑元素质量分数为0.5%时,Mg-6Al合金的晶粒最细,其腐蚀速率大大降低,表面腐蚀产物较少,耐蚀性最好.
The corrosion rates of Mg-6Al alloys with different antimony content in simulated low-concentration chloride environment were studied by immersion corrosion test.The micro morphology of corrosion products on the surface of Mg-6Al alloy were observed by optical microscope and scanning electron microscope.The results showed that with the increase of antimony element mass fraction from 0.5%to 1.5%,the corrosion rate of Mg-6Al alloy decreased first and then increased,the grain size of the alloy decreased first and then increased,and the surface corrosion products decreased first and then increased gradually.When the mass fraction of antimony was 0.5%,the grain size of Mg-6Al alloy was the smallest,and its corrosion rate was greatly reduced.Its surface had less corrosion products,and corrosion resistance was the best.
作者
李萍
崔扬
王莹
LI Ping;CUI Yang;WANG Ying(School of Civil Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China)
出处
《腐蚀与防护》
CAS
北大核心
2022年第6期38-40,共3页
Corrosion & Protection
基金
河南省科技攻关计划项目(222102230112)。
关键词
镁合金
锑元素
合金化
腐蚀速率
magnesium alloy
antimony element
alloying
corrosion rate
