Self-healing Coating by Using Pore of Porous Film Formed on Al Alloy Anodized and Effect of Pore-Widening Treatment on Corrosion Protection

In this study, advanced coating with self-healing property for corrosion protection of Al alloy was developed. This coating can be formed on Al alloy anodized, and pores in porous type of anodic oxide film formed on Al substrate was filled by a healing agent of coating. It is clear that the defect formed by mechanical damage was covered by self-healing structure, when this coating formed on Al surface was damaged. And corrosion protection also keep high if this coating was damaged.