Zinc phosphate coating process

Details Zinc phosphate coating process Zinc phosphate coating process

1987-10-30

1989-09-12

Silverberg, Sam

Chemistry: electrical and wave energy

Processes and products

148254, 148255, 148258, 148262, C23C 2212

Patent

active

048656534

ABSTRACT:
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 surface can also be coated with this composition and process.

REFERENCES:
patent: 2743204 (1956-04-01), Russel
patent: 4402765 (1983-09-01), Goto

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