METHOD FOR ANODIZING ALUMINUM AND ANODIZED ALUMINUM

PURPOSE: An anodic oxidation method of the aluminum and anodized aluminum, which forms an alumite film, are provided to reduce a cathode oxidation process time. CONSTITUTION: An anodic oxidation method of the aluminum is as follows. A workpiece(29) consisting of aluminum and aluminum alloy is oxidiz...

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Bibliographic Details
Main Authors IWADE TAKANOBU, AMAKUSA SEIJI, NAITO TETSUYOSHI, KURANO SHINJI, TATEIWA NORIHIRO, OHMI HIROSHI, YOKOYAMA KOICHI
Format Patent
LanguageEnglish
Korean
Published 06.07.2010
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROFORMING
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
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Summary:PURPOSE: An anodic oxidation method of the aluminum and anodized aluminum, which forms an alumite film, are provided to reduce a cathode oxidation process time. CONSTITUTION: An anodic oxidation method of the aluminum is as follows. A workpiece(29) consisting of aluminum and aluminum alloy is oxidized in the electrolyte(25). An alumite film is constituted in the surface of workpiece. Acid selected from the organic acid having the carboxylic group in electrolyte of one kind is contained. Electrolyte moves the surface front surface side of workpiece to the average velocity less than 15cm / second. The surface temperature of workpiece is 80°C or less and the anode oxidation in which the electric current density is 10 ~ 170A / dm^2 range is enforced. The electric current density is 40 ~ 170A / dm^2 range.
Bibliography:Application Number: KR20090130847