Zinc-cobalt alloy electrolyte and process

Details Zinc-cobalt alloy electrolyte and process Zinc-cobalt alloy electrolyte and process

C - Chemistry, Metallurgy

25

D

204/26

C25D 3/56 (2006.01)

Patent

CA 1271959

Abstract of the Disclosure An aqueous acidic electrolyte and process for electrodepositing a zinc-ccbalt alloy on a conductive substrate comprising zinc and cobalt ions, a brightening system including a brightening amount of a primary brightener comprising a bath soluble and compatible halogenated aryl aldehyde as well as derivatives thereof and a carrier brightener present m an amount effective to refine the grain of the zinc-cobalt alloy electrodeposit. The electrolyte further contains hydrogen ions to provide a pH on the acid side and optionally but preferably an auxiliary brightener to further enhance the brightness of the zinc-cobalt alloy deposit. Optionally and preferably, the electrolyte further contains buffering agents, dispersing agents and conductivity agents of the types conventionally employed in usual amounts.

492392

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