电化学测量技术在不锈钢点蚀研究中的应用与进展

Application and Progress of Electrochemical Measurement Technique in Study of Pitting Corrosion of Stainless Steel

不锈钢在含有侵蚀性离子的介质中极易发生点蚀,点蚀的存在不仅降低了不锈钢件的整体强度,严重时甚至会导致设备穿孔,造成严重的经济损失。因此,关于不锈钢点蚀行为的研究技术在防腐蚀、建筑、以及石油化工等领域备受关注。以各种技术及相关化学原理为依据,着重综述了近十年国内外电化学测量技术(包括极化曲线测量技术、电化学阻抗谱技术以及扫描电化学显微镜技术等)的研究进展,评述了其在腐蚀研究领域中的应用现状、前景以及不足。

Stainless steel in mediums containing corrosive ions is extremely prone to pitting. The existence of pitting corrosion could reduce the overall strength of the stainless steel, and even lead to the equipment perforation and cause serious economic losses. Therefore, the research techniques on the corrosion behavior of stainless steel in the field of anti-corrosion, construction, petrochemical and other areas receive much concern, Based on the summary of various techniques and their principles, the present paper mainly summarizes the research progress of the electrochemical measurement technologies in the last ten years. The application status, prospects and shortage of these techniques inthe corrosion research are reviewed,