Influence of Micro-arc Oxidation Coatings on Corrosion Performances of AZ80 cast alloy

To enhance the corrosion performance of cast AZ80 alloy, micro-arc oxidation (MAO) coating was synthesized at various processing current densities in a basic silicate-fluoride solution. The microstructure, composition, corrosion performance and Mott-Schottky characteristics of MAO coatings at different processing current densities were investigated using various microscopic characterization and electrochemical methods. It was found that a …