METHOD FOR MANUFACTURING SURFACE COATED MAGNESIUM ALLOY BASE MATERIAL, CAPABLE OF SIMPLY ACHIEVING HIGH CORROSION RESISTANCE TO MAGNESIUM ALLOY BASE MATERIAL, SURFACE COATED MAGNESIUM ALLOY BASE MATERIAL OBTAINED BY ITS MANUFACTURING METHOD, METHOD FOR REPAIRING SURFACE COATED MAGNESIUM ALLOY BASE MATERIAL AND METHOD FOR USING SURFACE COATED MAGNESIUM ALLOY BASE MATERIAL

摘要

To provide a surface coated magnesium alloy base material excellent in corrosion resistance.SOLUTION: The method for manufacturing a surface coated magnesium alloy base material comprises: the step of arranging an aluminum containing magnesium alloy base material and a treatment solution in a closed space; the vapor coating step of contacting the vapor of a treatment solution to the surface of the aluminum containing magnesium alloy base material by heating the closed space to form a magnesium hydroxide coating including a magnesium hydroxide and a Mg-Al based layered double hydroxide on the surface; and the coating film formation step of forming a silica coating on the surface of the magnesium hydroxide coating by applying and heating a silicon alkoxide containing coating composition.SELECTED DRAWING: Figure 1