Performance Comparison between Complex Anodic Oxidation Film with n-SiC Addition and Hard Anodic Oxidation Film

Optical microscopy and thickness gauge were used to study the interface structure of cross section and longitudinal section of hard anodic oxidation film and complex anodic oxidation film with n-SiC addition. The results of SEM and EDS show that n-SiC entered into the oxide film. Performance of the complex anodic oxidation film was tested by friction and abrasion testing and salt-fog corrosion testing. The results show that the complex anodic oxidation film with n-SiC addition had better properties.