稀土镧对热浸镀铝层耐蚀性的影响  

Effect of Rare Earth La on the Corrosion Resistance of Hot-dip Aluminum Coating

作　　者：李晓源[1] 文九巴[1] 李全安[1] 张荥渊[1] 胡鹏飞[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《机械工程材料》2004年第7期40-42,共3页Materials For Mechanical Engineering

基　　金：河南省高校杰出科研人才创新工程资助项目

摘　　要：通过CO2和H2S腐蚀试验,采用SEM和EDS研究了20钢经热浸镀稀土(镧)铝和扩散处理后的渗层组织和耐蚀性能。结果表明:镧对铝的扩散具有促进作用,改善了镀层的耐蚀性能;当铝中加入镧的含量达到0.5%时,其耐蚀性最好。CO_2 corrosion tests and H_2S corrosion tests, together with SEM and EDS, were used to study the microstructure and corrosion resistance of the coating on 20 steel treated by hot-dip aluminizing and diffusing with rare earth La. The results show that the corrosion resistance of the coating was improved greatly by rare earth La. The hot-dip aluminum coating with 0.5%La showed the best corrosion resistance.

关 键 词：稀土 热浸镀铝 镀层 耐蚀性 

分 类 号：TG174.443[金属学及工艺—金属表面处理]