Process for applying a zinc coating to an aluminum article

Details Process for applying a zinc coating to an aluminum article Process for applying a zinc coating to an aluminum article

1987-12-16

1989-12-19

Silverberg, Sam

Coating processes

With post-treatment of coating or coating material

Heating or drying

427436, C23C 1000

Patent

active

048882186

ABSTRACT:
A process for coating an aluminum article with zinc by immersing the article in an aqueous bath prepared by dissolving solid zinc fluoride in water. Preferably, the pH of the bath is about 4 to about 6. After coating, the article can be heated to diffuse zinc into surface-adjacent regions of the article and thereby to provide a zinc-diffused layer that protects the article against corrosion.

REFERENCES:
patent: 2297241 (1942-09-01), Perner

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