In-situ incorporation of layered double hydroxides (LDH) nanocontainers into plasma electrolytic oxidation (PEO) coatings on AZ91 Mg alloy has been achieved in the present study. Fumarate was selected as Mg corrosion inhibitor for exchange and intercalation into the nanocontainers, which were subsequently incorporated into the coating. It was found that the thickness and compactness of the coatings were increased in the presence of LDH nanocontainers. The corrosion protection performance of the blank PEO, LDH containing PEO and inhibitor loaded coatings was evaluated by means of polarization test and electrochemical impedance spectroscopy (EIS). The degradation process and corrosion resistance of PEO coating were found to be greatly affected by the loaded inhibitor and nanocontainers by means of ion-exchange when corrosion occurs, leading to enhanced and stable corrosion resistance of the substrate.

就地本研究已经实现了将层状双氢氧化物 (LDH) 纳米容器结合到 AZ91 镁合金上的等离子体电解氧化 (PEO) 涂层中。选择富马酸盐作为 Mg 腐蚀抑制剂，用于交换和嵌入纳米容器，随后将其掺入涂层中。发现在 LDH 纳米容器的存在下，涂层的厚度和致密性增加。通过极化试验和电化学阻抗谱(EIS)评价空白PEO、含PEO LDH和负载缓蚀剂涂层的腐蚀防护性能。PEO涂层的降解过程和耐蚀性被发现在腐蚀发生时通过离子交换的方式受负载的抑制剂和纳米容器的影响很大，