Alkaline bath for the electrolytic deposition of low carat yello

Details Alkaline bath for the electrolytic deposition of low carat yello Alkaline bath for the electrolytic deposition of low carat yello

1981-05-22

1982-11-09

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

C25D 362

Patent

active

043583512

ABSTRACT:
For the production of low carat rose to gold colored gold alloy coatings there are needed electrolytic baths containing soluble gold cyanide, soluble copper cyanide, potassium carbonate or potassium bicarbonate which produce corrosion resistant coatings of 13-18 carats and no physiologically hazardous cadmium. The baths of the present invention contain, in place of cadmium, 7.5 to 40 grams/liter of zinc as complex zinc cyanide.

REFERENCES:
patent: 2724687 (1955-11-01), Spreter et al.
patent: 3749650 (1973-07-01), Dettke et al.
patent: 3883409 (1975-05-01), Olivier

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