On the complex oxidizing treatment for Al-Mn-Mg alloy

The complex oxidizing techniques (anodic oxidizing +thermal oxidizing) for Al-Mn-Mg alloy are studied , including morphology of the surface transform films, thickness, hardness and corrosiveness. The results show that the transform films possess different morphology and thickness with different techniques. After being treated by the complex oxidizing technique,the surface thickness and corrosion-resistance of the alloy improve greatly.