关键字：MAGNESIUM ALLOY; PROTECTION; ACID; FILM

摘要：Ce-based coatings are often used as protective coatings on Mg alloy because of their excellent self-healing and anticorrosion properties. However, poor adhesion of Ce coating can easily cause it peel off and thus lose its protective effect. In this work, for the first time, the graphene oxide (GO) was employed as an interlayer between micro-arc oxidation (MAO) and Ce-based coatings to improve their adhesion strength. The results show that the addition of GO layer can effectively improve the adhesion strength and hardness of the composite coating. The MAO/GO/Ce composite coating not only significantly enhance the corrosion resistance of the substrate, but also has self-healing ability. According to the molecular dynamics calculations, the GO interlayer can form a good bond with the inner MgO layer and the outer CeO2 layer. The MAO/GO/Ce composite coating with high adhesion and self-healing property may extend the practical application of Mg alloys.

卷号：40

期号：-

是否译文：否