CAJ | 학술논문

通过高温高压电化学测试,获得不同实验温度下13Cr不锈钢的循环伏安曲线、交流阻抗谱和Mott-Schottky曲线,结合ZSIMPWIN软件和扫描电子显微镜分析,研究高温高CO2 分压环境下,温度对13Cr不锈钢腐蚀电化学行为的影响. 在高温高CO2 分压环境下,随温度升高,13Cr不锈钢发生腐蚀的倾向增加,表面钝化膜稳定性下降,点蚀敏感度增加.
통과고온고압전화학측시,획득불동실험온도하13Cr불수강적순배복안곡선、교류조항보화Mott-Schottky곡선,결합ZSIMPWIN연건화소묘전자현미경분석,연구고온고CO2 분압배경하,온도대13Cr불수강부식전화학행위적영향. 재고온고CO2 분압배경하,수온도승고,13Cr불수강발생부식적경향증가,표면둔화막은정성하강,점식민감도증가.
This article is focused on the effect of temperature on the corrosion electrochemical behavior of 13Cr martensitic stain-less steel under a high temperature and high CO2 partial pressure environment. Cyclic polarization ( CP) measurements, electrochemi-cal impedance spectroscopy ( EIS ) , Mott- Schottky plot measurements, ZSIMPWIN software, and scanning electron microscopy (SEM) are used in this study. The results show that the stability of passive films formed on the 13Cr stainless steel surface decreases with increasing temperature under a high temperature and high CO2 partial pressure environment. This leads to increases in the corro-sion rate and pitting susceptibility.