Treatment of chromium electrodeposit

Details Treatment of chromium electrodeposit Treatment of chromium electrodeposit

1978-03-01

1979-06-26

Mack, John H.

Chemistry: electrical and wave energy

Processes and products

428621, 428658, 428666, C25D 548

Patent

active

041592301

ABSTRACT:
A method whereby a surface of chromium metal electrodeposited on a zinc substrate from a trivalent chromium electrolyte is treated by contacting the surface with an aqueous solution at a pH of from 5 to 12 and containing a dissolved metal salt of a weak acid which does not form a soluble complex with zinc. Preferred salts are carbonates, phosphates and silicates of an alkali metal, e.g. sodium or potassium. Also disclosed is the product of said process comprising an article having a zinc substrate, a microporous electrodeposited chromium coating from 0.025 to 2.5 microns in thickness on said substrate, and a water-insoluble basic salt of zinc within the micropores.

REFERENCES:
patent: 2796361 (1957-06-01), Chester
patent: 3323881 (1967-06-01), Nelson

Affiliated with

Also associated with

Rating

Treatment of chromium electrodeposit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Treatment of chromium electrodeposit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treatment of chromium electrodeposit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1557873