Chemistry: electrical and wave energy – Processes and products
Patent
1978-08-11
1979-05-22
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
204 46R, C25D 346, C25D 364
Patent
active
041558170
ABSTRACT:
A bath for electroplating substantially pure silver deposits includes 2-240 grams per liter of alkali metal silver cyanide, a water-soluble electrolyte and a water-soluble selenium compound containing selenium in the -2 oxidation state. The bath has a pH of 8-10 and a free cyanide content of less than 1.5 grams per liter. The bath is maintained at a temperature of 18.degree.-24.degree. Centigrade and may be operated to provide current densities of 0.1-75 amperes per square decimeter.
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APC 351,241, Weiner, May 18, 1943.
Fletcher Augustus
Moriarty William L.
American Chemical and Refining Company, Inc.
Kaplan G. L.
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