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topic 646

Stripping nickel or cobalt from copper


(1996)

I'm looking for a very fast method to strip Nickel or Cobalt away from Copper alloys.

No use to recommend phosphoric acid, sulfuric acid or cyanide solutions, as the problem here is that the copper base will be heavily attacked.

To have some additional information, the stripper should be able to remove 0.1 you of Nickel or Cobalt within a few seconds.

Any suggestions, commercial electrolytes or already proven solutions in Reel-to-reel plating?
Thanking everyone in advance.

Harry.

Harry van der Zanden
Harry van der Zanden
- Budapest, Hungary


(1996)

Enthone Enstrip NP. At 145 °F the Nickel will jump off the part leaving slightly brown Cu that can be brightened right up by any standard brite dip/microetch.
Good Luck
Dave, SUNNYvale, California

Dave Kinghorn
Dave Kinghorn
Chemical Engineer
SUNNYvale, California



(1996)

Hi Dave,

Thank you for yr. comment. I ordered some solution thanks to your remark and we start to test it. I keep you informed.

Bye bye,

Harry

Harry van der Zanden
Harry van der Zanden
- Budapest, Hungary



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