
plating, anodizing, & finishing Q&As since 1989
"How to palladium plate in lieu of rhodium to tarnish-proof silver"
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2004
I require to produce a protective coating on silver products that we make, protecting them from sulfide blackening in a volcanic environment (Rotorua).
"Silver Tarnish Strips"
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Your purchases make finishing.com possible
From the Pt group metals I would prefer to plate in a bright palladium which is more ductile in post plate forming than rhodium plate.
Using palladium ammonium nitrate, I would like to know what brightener I should use in the plating bath and any other relevant information as our current palladium plate is of a matte finish at various temperatures. The bath palladium concentration of about 5 grams a litre. Next step is to try gas agitation during plating. Rather than waste a lot of time trying different methods it would be good to get a quick answer. Was thinking of trying the brighteners used in nickel plating?
If possible text references would be nice.
Thank you.
Regards
Kevin AnsinPrecious metal refiner and glass bead producer - DUNEDIN, Otago, New Zealand

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