奥氏体铸体和18-8不锈钢在烧碱中的腐蚀行为  

Difference in corrosion behaviours between austenitic cast iron and 18-8 stainless steel in hot caustic soda solution

作　　者：申泽骥[1] 姜炳焕[1] 苏贵桥[1] 刘希丽[1] 

机构地区：[1]沈阳铸造研究所,辽宁沈阳110021

出　　处：《材料科学与工艺》1999年第3期10-13,共4页Materials Science and Technology

摘　　要：用失重法和电化学方法研究了奥氏体铸铁和１８ － ８ 不锈钢在高温烧碱中的腐蚀行为． 用扫描电镜观察了两种材料泵件表面的腐蚀形貌，分析了奥氏体铸铁耐碱腐蚀性能优于１８ － ８ 不锈钢的原因．Corrosion behaviours of austenitic cast iron and 18 8 stainless steel in hot concentrated caustic soda solution were investigated by means of weight loss and electrochemical measurement. Morphology of corroded surfaces of pump parts cast of austenitic cast iron and 18-8 stainless steel was analyzed by SEM. The mechanism why corrosion resistence of austenitic cast iron is superior to that of 18-8 stainless steel was concluded.

关 键 词：奥氏体铸铁 不锈钢 烧碱 腐蚀行为 试验 

分 类 号：TG172.63[金属学及工艺—金属表面处理]