Zinc phosphate coating process

Details Zinc phosphate coating process Zinc phosphate coating process

C - Chemistry, Metallurgy

23

C

148/17, 204/97.0

C23C 22/12 (2006.01) C23C 22/36 (2006.01)

Patent

CA 1313108

ABSTRACT OF THE DISCLOSURE The present invention relates to a composition and process for metal finishing involving the formation of zinc phosphate coatings of desired morphology on a ferrous surface. The inclusion of a hydroxylamine agent in the phosphating bath expands the range of zinc concentrations over which the desired coating morphology is obtained. Zinc and aluminum surfaces can also be coated with this composition and process.

581561

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