Method of coloring of anodized aluminum and aluminum alloys by e

Details Method of coloring of anodized aluminum and aluminum alloys by e Method of coloring of anodized aluminum and aluminum alloys by e

1975-08-25

1976-06-15

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

C25D 1118

Patent

active

039635910

ABSTRACT:
The present invention relates to an improvement of the method for electrolytic coloring of anodically produced oxide layers on aluminum and its alloys, by electrolytic treatment in a metal salt (Ni, Co, Cu) solution. It is characterized in that one establishes in the coloring electrolyte a content of 0.02 to 0.75 grams copper per liter. The method permit uniform and reproductible coloring to be undertaken in a simple manner.

REFERENCES:
patent: 3787295 (1974-01-01), Endinger et al.

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