天然碱苛化烧碱液对不锈钢及镍材的腐蚀作用  

The Corroding Action of Natural Soda Aqueons Caustic on Stainless Steel and Nickel

作　　者：王红旺[1] 夏向东[1] 张通[1] 李建国[1] 董俊慧[1] 张力 

机构地区：[1]内蒙古工学院化学工程系

出　　处：《内蒙古工学院学报》1993年第2期12-17,共6页

基　　金：内蒙古自然科学基金项目

摘　　要：用高纯高铬铁素体不锈钢000Cr30Mo2和000Cr26Mo、奥氏体不锈钢1Cr18Ni9Ti 和工业纯镍,在内蒙古查干诺尔碱矿烧碱车间进行挂片腐蚀试验。测量腐蚀速度,评定耐蚀性等级,用电镜观察腐蚀形态和表面膜特征。结果表明:000Cr30Mo2和000Cr26Mo 钢及 Ni 材,在该矿天然碱苛化烧碱液中具有优良的耐腐蚀性能。并推荐前两种钢为制造烧碱蒸发罐易蚀部件(位)用钢。A corrosion test is made by hanging sliced samples of ferritic stain- less steel 000Cr30Mo2 and 000Cr26Mo,austenitic stainless steel 1Cr18Ni- 9Ti and industrial-purity nickel in the caustic workshop of the Inner Mongolia Chagannuor Soda Mine.Corrosion rates are measured,corrosion- resistance degrees are determined,and,by means of the electronic micro- scope,corrosive morphologies and characteristics of passive films are observed.All the results show that both the high-purity high-chromium ferritic stainless steel 000Cr30Mo2 and 000Cr26Mo and the industrial- purity nickel possess fine corrosion resistance in the aqueous caustic of the Inner-Mongolian natural soda.Therefore,it is suggested that the high-purity ferritic stainless steel 000Cr30Mo2 and 000Cr26Mo be used to make parts of the evaporator which are subject to corrosion in preparing caustic soda.

关 键 词：腐蚀 天然碱 不锈钢 镍材 氢氧化钠 

分 类 号：TG172.63[金属学及工艺—金属表面处理]