离子选择性酚醛涂层对碳钢防腐蚀性能的研究

Abstract

研究了涂有不同离子选择性酚醛层的碳钢试样在3%nACl溶液中的电化学交流阻抗谱，用不同的等效电路解析了不同涂层体系的频谱行为，讨论了不同离子选择性涂层对碳钢的防腐蚀性能，分析了各自的耐蚀机理。结果表明，双极性和阳离子选择性酚醛涂层对碳钢的防腐蚀性能比酚醛清漆好，而阴离子选择性酚醛涂层比酚醛清漆差。

Abstract The anticorrosion performance of carbon steel painted with anionselective,cationselective and bipolar phenolic coatings,and phenrolic varnish (nonionicselective phenolic coating) as contrast in 3% NaCl solution,was investigated by electrochemical impedance spectroscopy (EIS) technique.The results showed that compared with nonionicselective phenolic coating, the anionselective phenolic coating accelerates the propagation of metal corrosion, whereas cationselective phenolic coating decelerates corrosion propagation, and bipolar phenolic coating is the most corrosionresistance among the fur types of phenolic coatings.