METHOD FOR ANODIZING ALUMINUM ALLOY WORKPIECE, METHOD FOR SURFACE TREATING ALUMINUM ALLOY WORKPIECE, AND ANODIZING SOLUTION MIXES

摘要

A method for surface treating an aluminum alloy workpiece having zinc and magnesium includes: providing the aluminum alloy workpiece; polishing the aluminum alloy to achieve a mirror effect; degreasing the aluminum alloy workpiece; stripping a black film formed on the aluminum alloy workpiece; anodizing the aluminum alloy workpiece in an anodizing solution which includes acidic solution and an additive with a concentration of 0.5 mg/L to 25 g/L to form an oxidation film on the surface of the aluminum alloy workpiece, wherein the additive including at least one compound selected from a group consisting of adipic acid, 1,2,3-Benzotriazole, oxalic acid, sodium malate, and glycerin; and sealing the aluminum alloy workpiece. This disclosure further provides an anodizing solution applied in the method for surface treating an aluminum alloy workpiece and a method for anodizing the aluminum alloy workpiece using the same.

主权项

1. An anodizing solution for an aluminum alloy workpiece having zinc and magnesium, the anodizing solution comprising:
a sulfuric acid with a mass concentration from about 150 g/L to 230 g/L; and an additive with a mass concentration from about 0.5 mg/L to 25 mg/L; wherein the additive comprises at least one compound selected from a group consisting of adipic acid, 1,2,3-Benzotriazole, oxalic acid, sodium malate, and glycerin.