摘要
对Al-Zn -In -Sn -Mg和Al-Zn -In -Sn -Mg -RE 2种Al合金阳极进行固溶处理 ,测定了经固溶处理和未经固溶处理的阳极在 2 0℃和 6 5℃的 3%NaCl溶液中的电化学性能 .结果表明 ,高温下Al阳极电流效率普遍下降 ,腐蚀变得不均匀 ;添加RE的固溶处理阳极在 6 5℃时性能优良 ;固溶处理可改善Al阳极在高温介质中的性能 .讨论了RE及固溶处理对高温介质中Al阳极性能的影响 .
Al-Zn-In-Sn-Mg and Al-Zn-In-Sn-Mg-RE alloy anodes have been solution-treated,the electrochemical performance of the treated and untreated sacrificial anodes in 3% NaCl solutions have been studied at 20℃ and 65℃ respectively.The result shows that the current effiency of anodes has the common tendency to decrease and the surface dissolution characteristics becomes uneven with the temperature increasing.Addition of RE to the anodes and solution-treatment can help to get more excellent performance.Solution-treatment has a positive effect on improving the performance of aluminum anodes especially for those working in solutions at elevated temperature.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2002年第3期169-171,共3页
Corrosion Science and Protection Technology
关键词
牺牲阳极
稀土元素
固溶处理
铝合金
aluminum alloy,sacrificial anodes,rare earth element(RE),solution treatment
