Abstract A hybrid PEO-epoxy coating was developed for magnesium. A highly-efficient corrosion inhibitor (3-methysalicylate) was impregnated into the anodized layer, which was sealed by an epoxy layer through dip-coating process. Influence of dip-coating parameters on coating properties was investigated. The corrosion performance was evaluated through general and localized electrochemical techniques. As a result, the epoxy layers registered superior resistance, whereas the anodized layer suppressed corrosion expansion. Longer immersion and triple-dipping favored the production of better sealed epoxy layer. The active protection mechanism was achieved by suppression the re-deposition of detrimental impurity and/or adsorption upon the exposed surface from incorporated inhibitor.

中文翻译：

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含杂化PEO-环氧涂层的缓蚀剂在镁表面的防腐性能

摘要 开发了一种用于镁的混合 PEO-环氧树脂涂层。将高效腐蚀抑制剂（3-甲基水杨酸盐​​）浸渍到阳极氧化层中，并通过浸涂工艺由环氧树脂层密封。研究了浸涂参数对涂层性能的影响。通过通用和局部电化学技术评估腐蚀性能。结果，环氧树脂层表现出优异的抵抗力，而阳极氧化层抑制了腐蚀膨胀。更长时间的浸泡和三次浸渍有利于产生更好的密封环氧树脂层。主动保护机制是通过抑制有害杂质的再沉积和/或掺入的抑制剂在暴露表面上的吸附来实现的。