Galvanic gold alloying bath

Details Galvanic gold alloying bath Galvanic gold alloying bath

1990-08-29

1991-04-09

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

C25D 362

Patent

active

050062085

ABSTRACT:
Yellow to rose-colored gold alloy coatings with copper and silver are obtained from stable galvanic baths with a pH of 8.5 to 11 containing, 1 to 15 g/liter gold as potassium gold (I) cyanide, 5 to 50 g/liter copper as potassium copper (I) cyanide, 0.05 to 5 g/liter silver as potassium silver (I) cyanide and dipotassium hydrogenphosphate as well as alkali cyanides in amounts of up to 10 g/liter and 0.1-1 mg/liter potassium selenocyanate.

REFERENCES:
patent: 3532610 (1970-10-01), DuRose
patent: 3586611 (1971-06-01), Heilmann
patent: 4687557 (1987-08-01), Emmenegger

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