Process for coating metal surfaces to protect against corrosion

Details Process for coating metal surfaces to protect against corrosion Process for coating metal surfaces to protect against corrosion

1993-04-13

1994-08-30

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148257, 148255, 148273, 148265, 148268, C23C 2234

Patent

active

053424565

ABSTRACT:
A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly galvanized steel, by a dry-in-place aqueous acidic liquid comprising:

REFERENCES:
patent: 3539403 (1970-11-01), Ries
patent: 4191596 (1980-03-01), Dollman et al.
patent: 4496404 (1985-01-01), King

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