Process for treatment of metallic surfaces by means of fluoropho

Metal treatment – Compositions – Heat treating

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148 615Z, 148 627, C23F 708

Patent

active

041534786

ABSTRACT:
Steel, aluminum and aluminum alloys, zinc and zinc alloys are treated to improve corrosion resistance with an aqueous solution of a fluorophosphate salt to passivate the metal surface, before or after phosphatizing and prior to painting.

REFERENCES:
patent: 3342687 (1967-09-01), Gould

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