Process for phosphating electrolytically zinc-coated metals

Details Process for phosphating electrolytically zinc-coated metals Process for phosphating electrolytically zinc-coated metals

C - Chemistry, Metallurgy

23

C

148/17

C23C 22/13 (2006.01) C23C 22/18 (2006.01)

Patent

CA 1240905

ABSTRACT OF THE DISCLOSURE A method for phosphate coating zinc or nickel-zinc alloy electrolytically coated metal surfaces, in which they are exposed to a phosphating solution containing zinc, manganese, and phosphate ions, and optionally cobalt and/or nitrate ions. The method is conducted at an elevated temperature for up to slightly more than 5 seconds.

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