Pitting of silver plating on copper alloy
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?
ThanksDeen [last name deleted for privacy by Editor]
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.
3rd Generation in Plating
Consultant - Arvika, Sweden
May 21, 2009
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.
Ted Mooney, P.E.
Pine Beach, New Jersey
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