Method of coating articles of aluminum and an electrolytic bath

Details Method of coating articles of aluminum and an electrolytic bath Method of coating articles of aluminum and an electrolytic bath

1985-10-24

1987-04-21

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

C25D 1108

Patent

active

046594400

ABSTRACT:
An electrolytic bath for coating articles of aluminum and its alloys consists essentially of an aqueous solution containing an alkali metal silicate, a peroxide, a water-soluble carboxylic group-containing organic acid and a water-soluble fluoride. A vanadium compound may also be included in the bath whenever the coated articles are intended to be used for decorative purposes. In the process, the aluminum article is immersed in the bath and a voltage shock is applied thereto by imposing a voltage potential between the aluminum metal serving as the anode and a cathode immersed in the bath. The voltage potential is quickly raised to about 300 volts within about 2 to about 10 seconds and thereafter, the voltage is increased gradually to about 450 volts within a few minutes until the desired coating thickness is formed.

REFERENCES:
patent: 3812021 (1974-05-01), Craig et al.
patent: 3812022 (1974-05-01), Rogers et al.
patent: 3834999 (1974-09-01), Hradcovsky et al.

Affiliated with

Also associated with

Rating

Method of coating articles of aluminum and an electrolytic bath does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of coating articles of aluminum and an electrolytic bath , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of coating articles of aluminum and an electrolytic bath will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-749915