HEDP对1Cr18Ni9Ti在硝酸中腐蚀行为的影响  

Effect of HEDP on Corrosion Behavior of 1Cr18Ni9Ti in HNO_3 Cleaning System

作　　者：龚敏[1] 魏巍[1] 张鹏[1] 林修洲[1] 亢武[2] 张东[2] 赵朝康[2] 

机构地区：[1]四川理工学院,自贡643000 [2]中国工程物理研究院核物理与化学研究所,绵阳621000

出　　处：《腐蚀与防护》2010年第2期115-117,共3页Corrosion & Protection

基　　金：中国工程物理院项目资助;四川省教育厅重点科研项目(No:08ZA084)资助

摘　　要：采用电化学测试、金相及电子扫描探针检测,研究羟基乙叉二膦酸(HEDP)对1Cr18Ni9Ti在硝酸清洗条件下(10%HNO_3,50℃)的腐蚀行为的影响。结果表明:添加HEDP后1Cr18Ni9Ti在HNO_3体系中的耐点蚀性能进一步提高,且HNO_3与HEDP的二次钝化有一定的协同作用,有利于1Cr18Ni9Ti在HNO_3体系中钝化膜破坏后的再修复。The effect of HEDP on corrosion behavior of 1Cr18Ni9Ti in HNO3 cleaning system （10% HNO3, 50 ℃） was studied by electrochemical testing, metallographic and electronic scanning probe observation. The results showed that the pitting resistance of 1Cr18Ni9Ti was further improved by adding HEDP to HNO3 system. The synergistic effet between HNO3 and HEDP＇s secondary passivation would promote the repair of passivation film of 1Cr18Ni9Ti damaged in HNO3 system.

关 键 词：点蚀 二次钝化 1CR18NI9TI 羟基乙叉二膦酸(HEDP) 

分 类 号：TG174.4[金属学及工艺—金属表面处理]