The effects of the microstructure and material composition on the formation kinetics of passive film and pitting behavior of super 13Cr stainless steel (S13Cr SS) were investigated and compared with those of 2Cr13 stainless steel (2Cr13 SS). The results indicated that the passive film formed on S13Cr SS surface quickly reached a stable state, which was attributed to two reasons. The small grain size coupled with the high dislocations density increased the number of nucleation sites for passive film formation, and the high material composition enhanced the Cr and Mo compound contents in the passive film. The passive film on S13Cr SS was more compact and thicker than that on 2Cr13 SS. The pit depth on S13Cr SS was relatively shallow after potentiodynamic polarization. Therefore, the protective properties of the passive film on S13Cr SS increased, and the pitting corrosion resistance of S13Cr SS was enhanced.

研究了微观结构和材料组成对超级13Cr不锈钢（S13Cr SS）钝化膜形成动力学和点蚀行为的影响，并与2Cr13不锈钢（2Cr13 SS）进行了比较。结果表明，在S13Cr SS表面形成的钝化膜很快达到稳定状态，这有两个原因。小晶粒尺寸加上高位错密度增加了用于钝化膜形成的成核位点的数量，并且高材料组成提高了钝化膜中的Cr和Mo化合物含量。S13Cr SS上的钝化膜比2Cr13 SS上的致密膜更致密，更厚。电位动力学极化后，S13Cr SS上的凹坑深度相对较浅。因此，钝化膜对S13Cr SS的保护性能提高了，