采用动电位扫描极化曲线和电化学交流阻抗技术，研究了A3钢表面涂装阴离子选择性、阳离子选择性和双极性有机涂层在3%nACl溶液中的腐蚀和电化学行为，分析了不同离子选择性涂层对A3钢防蚀性能的差别，并探讨了其耐蚀机理Potentiodynamic method and electrochemical impedance spectroscopy technique were empoloyed to study the corrosion electrochemical behaviour of A3 steel covered with anion selective、 cation selective and bipolar organic coating ,and phenolic varnish (nonionic selective organic coating) as contrast, in 3% NaCl solution.The results indicate that,compared with phenolic varnish,anion selective organic coating accelerates the propagation of metal corrosion,whereas cation selective organic coating decelerates corrosion propagation, and bipolar organic coating is of the most corrosion resistance among the Four type organic coatings.国家自然科学基金;中国科学院腐蚀与防护国家重点实验室课
