Process for electrolytically coloring aluminum and aluminum...

C - Chemistry – Metallurgy – 25 – D

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204/24.6

C25D 11/14 (2006.01) C25D 11/22 (2006.01)

Patent

CA 1074725

ABSTRACT OF THE DISCLOSURE Aluminum or an aluminum alloy is first anodized to form an oxide film thereon. With the pores in this oxide film unsealed, the basis metal is then electrolyzed in an electroly- tic solution containing at least two metallic salts and a strongly reducing compound, by use of alternating current at potentials not more than about 15 volts.

246699

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