Phosphating solution for metal substrates

Details Phosphating solution for metal substrates Phosphating solution for metal substrates

C - Chemistry, Metallurgy

23

C

C23C 22/83 (2006.01) C23C 22/08 (2006.01) C23C 22/74 (2006.01)

Patent

CA 2093612

This invention relates to conversion coating of metal substrates which may comprise mixed metals such as steel, zinc or zinc based alloys or zinc aluminium alloy coated steel, aluminium or aluminium surfaces to provide a corrosion resistant surface which is subsequently coated with a paint coating. The process of the invention comprises contacting the metal surface with an aqueous composition comprising silica, phosphoric acid and a divalent metal ion, the composition being substantially free of chromium and of any oxy metal anions which the metal has a valency of at least 5. The metal surface is subsequently cured by drying, or preferably by heating immediately after contact with the composition with no intermediate rinsing stage. A paint coating is then applied. The process provides a painted surface, the coating providing an effective anti--corrosion coating and paint having good adhesion.

Affiliated with

Also associated with

Rating

Phosphating solution for metal substrates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phosphating solution for metal substrates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phosphating solution for metal substrates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1816502