Abstract In this study, a PEO/Silane/Epoxy three-layer coating was introduced as an effective protection system for the preservation of Mg alloy. Cerium nitrate was used as an inhibitor in the (plasma electrolytic oxidation) PEO coating structure and was coated with a silane layer containing various volume ratios of tetraethoxysilane (TEOS) and γ-amino propyltriethoxysilane (APTES). Electrochemical impedance spectroscopy (EIS) and adhesion tests were performed on three-layer coating samples. Protective properties of PEO coating as well as PEO/Epoxy coating was improved by applying the silane film as the interfacial layer, with the T50/A50 saline film showing the best protective performance.

中文翻译：

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AZ31B 镁合金防腐环氧涂层的有效 PEO/硅烷预处理

摘要 本研究引入PEO/硅烷/环氧树脂三层涂层作为镁合金保存的有效保护体系。硝酸铈用作（等离子体电解氧化）PEO涂层结构中的抑制剂，并涂有含有各种体积比的四乙氧基硅烷（TEOS）和γ-氨基丙基三乙氧基硅烷（APTES）的硅烷层。对三层涂层样品进行电化学阻抗谱 (EIS) 和附着力测试。PEO涂层和PEO/Epoxy涂层的保护性能通过应用硅烷薄膜作为界面层得到改善，其中T50/A50盐水薄膜表现出最好的保护性能。