method for aluminium or aluminium alloy, application of a green anodische oxydefilm.

摘要

A green-colored anodic oxide film on an aluminum or aluminum base alloy article is obtained by subjecting the article to alternating current anodization in an anodic oxidation bath containing sulfuric acid and then immersing the resulting article in an aqueous solution containing copper ions and an acid, followed by an aftertreatment.