Process for dyeing aluminum-containing zinc-based alloys

Details Process for dyeing aluminum-containing zinc-based alloys Process for dyeing aluminum-containing zinc-based alloys

1978-09-26

1980-04-29

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 62, C23F 726, C23F 504

Patent

active

042004756

ABSTRACT:
A process for dyeing an aluminum-containing zinc-based alloy, which comprises immersing an aluminum-containing zinc-based alloy in an alkaline solution containing hexavalent chromium ion, further immersing the thus treated alloy in an acidic aqueous solution and then dyeing the thus further treated alloy in an aqueous solution of an organic dyestuff thereby to obtain a dyed aluminum-containing zinc-based alloy having decorative appearance and corrosion resistance.

REFERENCES:
patent: 2477310 (1949-07-01), McLean et al.
patent: 3405014 (1968-10-01), Kuwabara et al.

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