Solution and method for selectively stripping alloys...

Details Solution and method for selectively stripping alloys... Solution and method for selectively stripping alloys...

C - Chemistry, Metallurgy

09

K

149/21

C09K 13/04 (2006.01)

Patent

CA 1145653

A B S T R A C T Improved solutions are provided for selectively stripping alloys containing nickel with gold, phosphorous or chromium from substrates formed from alloys containing iron with chromium and in some instances nickel, or nickel rich, chromium bearing alloys, some of which also contain iron. These solutions comprise concentrated nitric acid, at least one chloride salt, an organic corrosion inhibitor and optionally, an organic surface active agent. An improved method utilizing the solutions of the invention is also provided and facilitates stripping of these alloys in substantially reduced time, without degradation of the underlying substrate.

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