Electrodeposition of gold alloys

Details Electrodeposition of gold alloys Electrodeposition of gold alloys

1980-04-23

1982-12-28

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

C25D 362

Patent

active

043660355

ABSTRACT:
A cyanide-free bath for the electrodeposition of pink gold alloys and gold alloys having a white coloration which comprises an aqueous alkaline mixture of a gold sulphite, a water soluble copper alloying salt or complex, a water soluble palladium alloying salt or complex and an alkali metal sulphite or ammonium sulphite. The said bath may also include a water soluble brightening agent in the form of an arsenic, antimony or thallium salt, complex or chelate and a surface active agent. The said alloys are deposited to a thickness of up to 30 microns.

REFERENCES:
patent: 3475292 (1969-10-01), Shoushanian
patent: 3666640 (1972-05-01), Smith
patent: 4048023 (1977-09-01), Stevens
patent: 4199416 (1980-04-01), Middleton et al.

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