Preparation and characterization of melamine-resin/organosilicon/Na+-montmorillonite composite coatings on the surfaces of micro-arc oxidation of aluminum alloy

Abstract The aim of the present work was to evaluate the effect of the melamine-resin and Na + -montmorillonite and during the synthesis and deposition of organosilicon hybrid coating on 6063 micro-arc oxidation of aluminum alloy and to analyze how these synthesis parameters affect composition, corrosion performance, friction performance and adhesion of the coating resultant. The results show that the existence of melamine-resin/organosilicon/Na + -montmorillonite composite coating greatly improved the corrosion resistance of aluminium alloy, and the associativity between coating and substrate. What’s more, the obtained coating has superior corrosion resistance and frictional resistance. The surface of the coating forms a smooth and smooth microstructure, and the hydrophobicity of the composite coating is obviously improved. The corrosion experiment result indicates the high stability and better adhesion of melamine/organosilicon /Na + -montmorillonite composite coating. It could be used in corrosion environment for a long time.