Anticorrosion performance of the coating/metal system by electrochemical impedance spectra

查看全文 作　　者：Yinghuai Zhang Lining Xu Minxu Lu Pu [1]Zhang

机构地区：[1]School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

出　　处：《Journal of University of Science and Technology Beijing》索引2008年第15卷第4期,共4页

摘　　要：In order to investigate the anticorrosion performance of the organic coating/metal system, electrochemical impedance spectra (EIS) were measured in the 3.5wt% NaCl solution, the chemical component and the formation of corrosion products scale were analyzed by laser Raman microspectroscopy, and the pattern of the organic coating/metal system was observed by scanning electron microscopy (SEM). The characteristics and the delamination process of the organic coating/metal system were investigated systematically, and the emphases were on the transportation of the corrosive medium and the changes of the coating/metal interface. The results show that the impedance decreases at the initial immersion, then increases at the middle-immersion, and again decreases at last, which is related to the corrosion products scale. The concentration of Cl- in the coating, which destroys the corrosion products scale, increases with the immersion time. 关键词：抗腐蚀性能涂层/金属系统电化学阻抗光谱金属表面防护

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Anticorrosion performance of the coating/metal system by electrochemical impedance spectra

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