Passivation of steel with aqueous amine solutions preparatory to

Details Passivation of steel with aqueous amine solutions preparatory to Passivation of steel with aqueous amine solutions preparatory to

1985-05-03

1986-05-20

Castel, Benoit

Coating processes

With pretreatment of the base

Metal base

4273885, 134 27, 134 28, 134 29, 148 614R, B05D 310, B08B 3000

Patent

active

045901007

ABSTRACT:
This is a process that allows previously cleaned steel (which may have been leaned in any of several different ways) to be passivated with a rinse of almost pure water, that is made slightly alkaline to inhibit corrosion, and flash rusting such that any small residue remaining on the steel surface after drying of the water will itself evaporate and in such a manner that any remaining residue will be incorporated into a subsequently applied non-aqueous protective coating without leaving any water-soluble or ionic residue on the surface of the steel that will cause corrosion or affect adhesion of the protective coating.

REFERENCES:
patent: 3072502 (1963-01-01), Alfand
patent: 3154438 (1964-10-01), Keller et al.
patent: 3368913 (1968-02-01), Ziehr et al.
patent: 3519458 (1970-07-01), Rausch
patent: 4045253 (1977-08-01), Banks et al.

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