Stripping of electroplated nickel-iron alloys

Details Stripping of electroplated nickel-iron alloys Stripping of electroplated nickel-iron alloys

C - Chemistry, Metallurgy

09

K

149/15

C09K 13/00 (2006.01) C23F 1/00 (2006.01) C23F 1/44 (2006.01)

Patent

CA 1081098

Abstract of the Disclosure - A composition and process for selectively removing nickel-iron alloys from a metal substrate which comprises contacting said metal surface with an aqueous bath containing: (a) at least one nitro substituted organic compound containing at least one solubilizing group; (b) at least one organic amine or polyamine or substituted amine or polyamine; (c) at least one aliphatic carboxylic acid or salt thereof, or a compound which will yield said carboxylic acid or salt thereof in solution, further characterized in that said aliphatic carboxylic acid or salt thereof additionally contains at least one substituent group selected from -NH2 or quaternary amine salts thereof, -OH, or -SH. By nickel-iron alloy deposit is meant a deposit containing from about 5 to 90 percent by weight iron with that portion which is not iron being primarily nickel or nickel and cobalt. Although small amounts of impurities such as copper, zinc, cadmium, lead, etc. may also be present, the major constituents of the alloy are nickel and iron.

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