几种阴离子对AISI 304不锈钢孔蚀的影响  

THE INFLUENCE OF THE LOCAL CORROSION OF 304 STAINLESS STEEL BY ANIONS

作　　者：许淳淳[1] 吴小梅[2] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京航空材料研究院,北京100095

出　　处：《中国腐蚀与防护学报》2003年第3期129-133,共5页Journal of Chinese Society For Corrosion and Protection

基　　金：国家重点基础研究发展规划项目 (G19990 65 0 )

摘　　要：通过测量AISI30 4不锈钢 / 0 5mol/LNaCl体系在添加不同种类、不同浓度的所选阴离子 (MoO2 -4、WO2 -4、C12 H2 5SO-4和C12 H2 5C6H4SO-3 )溶液中 (pH =7,T =5 0℃ )的动电位扫描极化曲线 ,揭示了这几种阴离子对 30 4不锈钢在含Cl-体系中对孔蚀诱发及扩展的抑制作用和缓蚀效果 .结果表明 :几种阴离子对不锈钢孔蚀均有一定的抑制作用 ,抑制效果由大到小的顺序为 :WO2 -4>MoO2 -4>C12 H2 5SO-4>C12 H2 5C6H4SO-3 .Potentiodynamic scan polarization curves were used to study the local corrosion of 304 stainless steel in neutral solution of 0.5 mol/L NaCl containing various anions and concentration(MoO 2- 4?WO 2- 4?C 12 H 25 SO - 4 and C 12 H 25 C 6H 4SO - 3)at 50℃,and indicated the retardation influence and inhibitor effect of the induction and propagation of the local corrosion of anions to stainless steel.It was found that,when anions added into the bulk solution,they retarded the local corrosion of stainless steel in the solution.Retardation effect was WO 2- 4>MoO 2- 4>C 12 H 25 SO - 4>C 12 H 25 C 6H 4SO - 3.

关 键 词：304不锈钢 孔蚀 阴离子 

分 类 号：TG172[金属学及工艺—金属表面处理]