Pre-rinse for phosphating metal surfaces

Details Pre-rinse for phosphating metal surfaces Pre-rinse for phosphating metal surfaces

1996-02-16

1999-02-09

Langel, Wayne

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

423306, 423308, C23C 2278, C01B 2537, C01B 2545

Patent

active

058688730

ABSTRACT:
Disclosed is a composition for the pre-rinsing of a metal surface prior to phosphating, a method for preparing the composition, and a method for using the composition to pre-condition the metal surface. The composition is an aqueous suspension containing a water-insoluble manganese phosphate having the formula Mn.sub.x X.sub.y H.sub.2 (PO.sub.4).sub.4.nH.sub.2 O, in which X is a divalent metal ion other than manganese, x+y is 5 and x is a positive number of from 1 to 5, y is 0, 1, 2, 3 or 4, and n is less than 4.

REFERENCES:
patent: 3510365 (1970-05-01), Rausch et al.
patent: 3899365 (1975-08-01), Guy
patent: 4294808 (1981-10-01), Wasel-Nielen et al.
patent: 4311536 (1982-01-01), Schapira et al.
patent: 4762572 (1988-08-01), Mady et al.
J. Klicka, Chemical Abstracts, vol. 78, No. 24, 18 Jun. 1973, p. 137.

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