FUNCTIONAL ALUMINUM MATERIAL AND ELECTROLYTIC TREATMENT METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a functional aluminum material having no reddish brown color resulting from an electrolytic treatment for an anode oxide film of an iodine compound.

SOLUTION: An electrolytic treatment after anode oxidation is performed by using an electrolytic bath of medicinal iodine compound TMSOI (trimethyl sulfoxonium iodide) or TMSI (trimethyl sulfonium iodide), wherein the electrolytic bath is added with an anionic surface active surfactant. A good-surface functional aluminum material having a metallic color of the aluminum anode oxide film and restraining pitting caused by using the iodine compound can be produced by making the concentration of the iodine compound 0.1 g/l to 50 g/l and the concentration of the surface active surfactant 0.5 to 10 g/l.

COPYRIGHT: (C)2013,JPO&INPIT