Coating solutions for zinc surfaces

Details Coating solutions for zinc surfaces Coating solutions for zinc surfaces

1981-11-27

1983-04-26

Silverberg, Sam

Metal treatment

Compositions

Heat treating

148 624, C23C 110

Patent

active

043812031

ABSTRACT:
Solutions and processes for accelerating the rate of application of a conversion coating to zinc surfaces utilizing an aqueous solution containing an oxidizing agent which is a bromate, nitrite, persulfate or hypochlorite; a cation of cobalt, nickel, iron or tin; a complexing agent to keep the cation in solution; and sufficient alkaline material to produce a pH of at least 10.5.

REFERENCES:
patent: 3444007 (1969-05-01), Maurer et al.
patent: 3515600 (1970-06-01), Jones
patent: 3929514 (1975-12-01), Houlihan
patent: 4278477 (1981-07-01), Reinhold

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