Surface blackening treatment for zinciferous surfaces

Details Surface blackening treatment for zinciferous surfaces Surface blackening treatment for zinciferous surfaces

C - Chemistry, Metallurgy

23

C

C23C 18/00 (2006.01) C23C 22/53 (2006.01) C23C 22/60 (2006.01) C23C 22/68 (2006.01)

Patent

CA 2019810

Abstract of the Disclosure Zinciferous surfaces, particularly those of galvanized steel, may be effectively coated with an adherent corrosion resistant black layer of fine metal particles by contacting the surfaces with an aqueous solution containing (A) at least 0.5 g/L of the treatment solution of Ni2+ and/or Co2+ ions; and (B) an amount, sufficient to complex all the ions of component (A), of a weak complexing component selected from the group consisting of ammonia, saturated aliphatic compounds having at least two amino groups of which at least one is a primary amino group, and/or amino acids; and, optionally but preferably, (C) at least 50 parts per million ("ppm") by weight of a component selected from the group consisting of nitrite ions, nitrate ions, carbonate ions, thiocyanate ions, thiosulfate ions, thiourea, hypo- phosphite ions, phosphite ions, and/or perchlorate ions. 4::C:\M4827NI.APP

Affiliated with

Also associated with

Rating

Surface blackening treatment for zinciferous surfaces does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface blackening treatment for zinciferous surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface blackening treatment for zinciferous surfaces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1470673