ANODIZING METHOD OF MAGNESIUM OR MAGNESIUM ALLOY, CAPABLE OF SIMPLIFYING A PRE-PROCESS BY A DEGREASING PROCESS USING ENVIRONMENT-FRIENDLY STRONG-ALKALI AQUEOUS SOLUTION

摘要

PURPOSE: An anodizing method of magnesium or magnesium alloy is provided to minimize the failure of a product since a pre process is simplified and a surface, on which an anodizing film is formed, is maintained through a pre process.;CONSTITUTION: An anodizing method of magnesium or magnesium alloy comprises next steps. The foreign material and oxidation layer of the surface of magnesium or magnesium alloy is removed using strong-alkali aqueous solution(S10). The pre-processed magnesium or magnesium alloy is dipped in alkali electrolyte, direct current with current density of below 3A/dm 2 is applied to it and a coating layer of a magnesium oxide is formed(S20). The magnesium or magnesium alloy bearing the coating layer is cleaned with distilled water and is dried by hot air(S30).;COPYRIGHT KIPO 2011