Q: I plate nickel over acid copper and am having trouble getting the nickel to adhere to the copper plate. The surface needs to be bright as possible as this is for a decorative application.
A: Excessive brighter level can cause real adhesion problems with many deposits. Whether you are doing bright copper or bright nickel the components that make up the additives tend to inhibit any post treatment, including more plating. I would recommend using a reverse electroclean for 30 seconds followed by an acid dip to remove the brighteners and activate the surface. This will allow you to plate over the copper or nickel without sacrificing aesthetics. You won’t see this problem with chromium systems as the chromic acid will do this job for you.
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