Wear-resistant zinc articles and process of manufacture

Details Wear-resistant zinc articles and process of manufacture Wear-resistant zinc articles and process of manufacture

C - Chemistry, Metallurgy

25

D

204/35, 204/25.5

C25D 3/04 (2006.01)

Patent

CA 1095455

Abstract of the Disclosure A wear-resistant article comprises a zinc base metal having a substantially continuous, hard chromium skin layer on at least one surface thereof and a chromium-enriched subsurface layer of the zinc base metal situated immediately below the chromium skin layer. The chromium-enriched subsurface layer has a gradually decreasing chromium content in a direction in- wardly away from the skin layer and is at least as thick as the skin layer. The wear-resistant article of this invention is produced by-direct electrodeposition of chromium onto the zinc base metal from a self-regulating bath under controlled conditions. The chrome plating solution includes chromic acid, sulphite ions, alkaline fluosilicate, boric acid and alkali metal carbonate.

281272

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