通过测量AISI304不锈钢/05 mol/LNaCl体系在添加不同种 类、不同浓度的所选阴离子(MoO2-4、WO2-4、C12H25SO -4和C12H25C6H4SO-3)溶液中(pH=7，T=50℃)的动电位扫描极化 曲线 ，揭示了这几种阴离子对304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＞C12H25SO-4＞C12H25C 6H4SO-3.
Potentiodynamic scan polarization curves were used to study the local corrosion of 304 stainless steel in neutral solution of 0.5 m ol/L NaCl containing various anions and concentration(MoO2-4、WO2- 4、C12H25SO-4 and C12H25C6H4SO-3)at 50℃ ,and indicated the retardation influence and inhibitor effect of the induction a nd 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 WO2-4＞MoO 2-4＞C12H25SO-4＞C12H25C6H4SO-3.
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