Method of producing color-anodized aluminium articles

Details Method of producing color-anodized aluminium articles Method of producing color-anodized aluminium articles

1980-09-17

1982-02-23

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 42, 204 58, 204DIG9, 204 38A, 204181R, C25D 1112, C25D 1122

Patent

active

043167802

ABSTRACT:
Disclosed is a method of coloring an anodized and anodically reinforced aluminum or aluminum alloy article by cathodic treatment in a coloring solution wherein the cathodic electrolytic current is a negative voltage direct current having a duration substantially less than the interval therebetween and being repeated at a frequency sufficient to produce the required coloration.

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patent: 3935084 (1976-01-01), Terai et al.
patent: 4014758 (1977-03-01), Kawai et al.
patent: 4021315 (1977-05-01), Yanagida et al.
patent: 4128460 (1978-12-01), Nishimura et al.
patent: 4226680 (1980-10-01), Cooke et al.

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