ANODIZING METHOD OF ALUMINIUM AND ALUMINIUM ALLOY

摘要

PROBLEM TO BE SOLVED: To provide an anodizing method and an aluminium alloy aluminium excellent in corrosion-resistance and wear-resistance.;SOLUTION: In this anodizing method of aluminium and the aluminium alloy, the anodizing is performed by electrolyzation using a direct current electrolyzing method or a bipolar electrolyzing method which superposes an alternating current component on a direct current component in an alkaline bath which contains an alkaline earth metal compound as a essential component and contains arbitrarily selectively either boride or fluoride, or its both. The alkaline bath contains an oxide of the aluminium and aluminium alloy, and the alkaline earth metal compound as the essential component and contains arbitrarily selectively either boride and/or fluoride.;COPYRIGHT: (C)2003,JPO