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利用电化学阻抗谱(EIS)研究了一种适用于深海环境的重防护环氧涂料在3.5%NaCl溶液中常压以及3.5 MPa下的破坏机制,探讨了静水压力对涂层失效过程的影响.结果表明,静水压力加速了电解质溶液在涂层中的渗透,对涂层的失效过程有着明显的影响.与常压下相比,静水压力下涂层电阻更小,涂层的失效过程更快;涂层/金属界面的电荷转移电阻更小,界面处金属腐蚀反应更快,涂层下金属基体更容易发生腐蚀,涂层的防护性能变差.

参考文献

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[3] Zhang JT;Hu JM;Zhang JQ;Cao CN .Studies of water transport behavior and impedance models of epoxy-coated metals in NaCl solution by EIS[J].Progress in Organic Coatings: An International Review Journal,2004(2):145-151.
[4] F. Deflorian;L. Fedrizzi;S. Rossi;P. L. Bonora .Organic coating capacitance measurement by EIS: ideal and actual trends[J].Electrochimica Acta,1999(24):4243-4249.
[5] Suay JJ.;Rodriguez MT.;Razzaq KA.;Carpio JJ.;Saura JJ. .The evaluation of anticorrosive automotive epoxy coatings by means of electrochemical impedance spectroscopy[J].Progress in Organic Coatings: An International Review Journal,2003(2):121-129.
[6] Mirabedini SM.;Thompson GE.;Moradian S.;Scantlebury JD. .Corrosion performance of powder coated aluminium using EIS[J].Progress in Organic Coatings: An International Review Journal,2003(2):112-120.
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