腐蚀介质对双相不锈钢2205腐蚀性能影响的研究  

Effect of corrosive medium on the corrosion resistance of duplex stainless steel 2205

作　　者：张敏[1] 张恩华[1] 孟强[1] 支金花[1,2] 张海存 

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048 [2]西安陕鼓动力股份有限公司,陕西西安721008

出　　处：《兵器材料科学与工程》2011年第6期40-43,共4页Ordnance Material Science and Engineering

基　　金：陕西省教育厅自然科学基金资助项目(00k904);西安市科技计划项目(cxy09024)

摘　　要：采用金属材料实验室均匀腐蚀全浸试验方法和成分分析以及金相分析手段,研究经过不同热处理的双相不锈钢2205在35℃条件下、两种腐蚀介质(质量分数10%的HCl溶液和10%的H2SO4溶液)中的腐蚀行为和耐蚀性能。结果表明:在H2SO4溶液中,双相不锈钢2205表面形成钝化膜,阻碍腐蚀的发生,钝化膜的主要成分是Cr2O3、FeO、Cr-O等氧化物;而在HCl溶液中,双相不锈钢2205的耐蚀性较差,且其耐蚀性与热处理固溶温度呈正相关。By using metal materials uniform corrosion methods of laboratory immersion testing,component analysis and microstructure observation,the corrosion behaviors and resistance of two kinds of heat treated duplex stainless steel 2205 were studied under two kinds of corrosion medium of 10% HCI and 10% H2SO4 solutions at 35 ℃.The test results show that passive films mainly containing oxides,such as Cr2O3,FeO and Cr-O,will be formed in H2SO4 solution,which prevent duplex stainless steel 2205 from corrosion.The corrosion resistance of stainless steel 2205 is relatively poor in HCl solution,and decreases with the increasing of quenching temperature.

关 键 词：双相不锈钢 微观组织 耐蚀性 

分 类 号：TG404[金属学及工艺—焊接]