铝合金稀土转化膜处理对LC4合金耐SCC性能的影响  

EFFECT OF RARE EARTH CONVERSION COATING ON SCC RESISTANCE OF LC4 ALUMINIUM ALLOY

作　　者：李久青[1,2] 高陆生 卢翠英[1,2] 罗秉柱 

机构地区：[1]北京科技大学 [2]冶金部腐蚀-磨蚀与表面技术开放研究室

出　　处：《腐蚀科学与防护技术》1996年第2期139-143,共5页Corrosion Science and Protection Technology

基　　金：金属腐蚀与防护国家重点实验室资助项目

摘　　要：利用慢应变速率试验（ＳＳＲＴ）等方法研究了Ｐ５和ＳＲＥ稀土转化膜处理对ＬＣ４铝合金在３．５％ＮａＣｌ溶液中的应力腐蚀行为的影响。Ｐ５和ＳＲＥ工艺对ＬＣ４合金的应力腐蚀有一定抑制作用，ＳＲＥ处理液对ＳＣＣ有缓蚀效果。The effect of rare earth conversion coatings P5 and SRE on SCC behavior of LC4 aluminium alloy in 3.5% NaCl has been studied by SSRT and other methods. The stress corrosion cracking of LC4 alloy was inhibited to some extent after P5 or SRE treatment. Some inhibition effect on SCC was shown in SRE treatment solution.

关 键 词：铝合金 应力腐蚀 稀土转化膜 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG172.9[金属学及工艺—金属材料]