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topic 4163

Pitting of silver plating on copper alloy


(1999)

Hello,

I'm plating silver onto copper alloy with thickness around 150 mil. And I'm having pitting problems on the silver finish. Does anyone know what is the cause of the problem?

Please help!

Thanks

Deen [last name deleted for privacy by Editor]
- Malaysia


(1999)

Hi Deen.

Have you tried to filter the solution with carbon? And check the brightener, and analyze the carbonate in the solution if it is too high.

Regards,

anders sundman
Anders Sundman
3rd Generation in Plating
Consultant - Arvika, Sweden



May 21, 2009

Thanks, Anders.

Deen, there are other threads on this topic if you don't feel that Anders' answer is everything you need. See letter 42418 for more on silver pits, for example. Good luck.

Regards,

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



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