铁素体不锈钢在模拟混凝土孔隙介质中的电化学与钝化行为研究

Electrochemical and passivation behavior investigation of ferritic stainless steel in simulated concrete pore media.

作者信息

Luo Hong, Su Huaizhi, Dong Chaofang, Xiao Kui, Li Xiaogang

机构信息

College of Mechanics and Materials, Hohai University, Nanjing 210098, China.

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China.

出版信息

Data Brief. 2015 Sep 1;5:171-8. doi: 10.1016/j.dib.2015.08.016. eCollection 2015 Dec.

DOI:10.1016/j.dib.2015.08.016

PMID:26501086

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4588451/

Abstract

The applications of stainless steel are one of the most reliable solutions in concrete structures to reduce chloride-induced corrosion problems and increase the structures service life, however, due to high prices of nickel, especially in many civil engineering projects, the austenitic stainless steel is replaced by the ferritic stainless steels. Compared with austenite stainless steel, the ferritic stainless steel is known to be extremely resistant of stress corrosion cracking and other properties. The good corrosion resistance of the stainless steel is due to the formation of passive film. While, there is little literature about the electrochemical and passive behavior of ferritic stainless steel in the concrete environments. So, here, we present the several corrosion testing methods, such as the potentiodynamic measurements, EIS and Mott-Schottky approach, and the surface analysis methods like XPS and AES to display the passivation behavior of 430 ferritic stainless steel in alkaline solution with the presence of chloride ions. These research results illustrated a simple and facile approach for studying the electrochemical and passivation behavior of stainless steel in the concrete pore environments.

摘要

不锈钢的应用是混凝土结构中减少氯离子诱发腐蚀问题并延长结构使用寿命的最可靠解决方案之一。然而，由于镍的价格高昂，尤其是在许多土木工程项目中，奥氏体不锈钢被铁素体不锈钢所取代。与奥氏体不锈钢相比，铁素体不锈钢以其对应力腐蚀开裂及其他性能具有极强的抗性而闻名。不锈钢良好的耐腐蚀性归因于钝化膜的形成。然而，关于铁素体不锈钢在混凝土环境中的电化学和钝化行为的文献却很少。因此，在此我们介绍几种腐蚀测试方法，如动电位测量、电化学阻抗谱（EIS）和莫特-肖特基方法，以及表面分析方法，如X射线光电子能谱（XPS）和俄歇电子能谱（AES），以展示430铁素体不锈钢在有氯离子存在的碱性溶液中的钝化行为。这些研究结果说明了一种简单易行的方法来研究不锈钢在混凝土孔隙环境中的电化学和钝化行为。