Non-chromium passivation method and composition for galvanized m

Details Non-chromium passivation method and composition for galvanized m Non-chromium passivation method and composition for galvanized m

1993-08-16

1994-09-06

Green, Anthony

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148275, 106 1412, C23C 2207

Patent

active

053445058

ABSTRACT:
A substantially chromium free composition and method for passivating a galvanized metal surface is disclosed. The passivation treatment which may be rinsed or dried-in-place includes phosphoric acid, boric acid and optionally molybdic acid.

REFERENCES:
patent: 2493516 (1950-01-01), Zimmer et al.
patent: 3468724 (1969-09-01), Reinhold
patent: 4385940 (1983-05-01), Kirihara et al.

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