Treatment of zinc surfaces

Details Treatment of zinc surfaces Treatment of zinc surfaces

C - Chemistry, Metallurgy

23

C

148/17

C23C 22/36 (2006.01) C23C 22/16 (2006.01)

Patent

CA 1090237

TREATMENT OF ZINC SURFACES ABSTRACT OF THE DISCLOSURE An improved process for forming a zinc phosphate coating on a zinc surface comprises contacting the surface with an aqueous nitrate and ammonia-free solution containing zinc, phosphate, nickel or cobalt, and hydrogen peroxide.

287380

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