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Nickel activation without HCl

2002

Hello,

I would like to know if there is a nickel activator that does not contain HCl. I am trying to copper plate to a sputtered nickel film. There is an aluminum film under the nickel. The problem I have observed is that HCl solutions will undercut the aluminum and lift off the nickel if there are scratches or pinholes in the nickel film. The nickel layer is thin, so mechanical abrasion is not an option.

Thank you.

David Smith
- San Jose, California

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2002

David,

There are some proprietary chemicals that we've used with success. Puma C-12 activator can be used without HCl; MultiPrep 506 (Macdermid) also works to activates nickel well. I would call both suppliers to ask about deleterious effects to the aluminum.

Megan Pellenz
- Syracuse, New York