Methods and compositions for removing copper and copper...

Details Methods and compositions for removing copper and copper... Methods and compositions for removing copper and copper...

C - Chemistry, Metallurgy

23

F

149/14

C23F 1/18 (2006.01) C23F 1/44 (2006.01) C23G 1/14 (2006.01)

Patent

CA 1244328

Abstract of the Disclosure Methods and compositions for removing copper and copper oxide deposits from metal surfaces including surfaces formed of auste- nitic, nickel-chromium and other similar alloys without adversely affecting such surfaces are provided. The copper and copper oxide deposits are dissolved in an aqueous ammoniacal cleaning solution which includes one or more alkali metal or ammonium per- borate oxidizing agents.

498529

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