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topic 3680

Stripping silver from Nickel


1999

I am trying to remove silver plating from a job. the substrate is plated with nickel before it is plated with silver. I tried the sulphuric/nitric acid method, but it attacks the undercoat. Is there a harmless nonproprietary method to remove silver from nickel

Nitin Kibe
- Pune, India


1999

Hi Nitin. You can use sodium cyanide 90 g/l and sodium hydroxide 15g/l. , room temp anodic 6 A/dmů with a steel cathode.

And you can also try 10 percent of sodium cyanide and water to full volume 1 to 5 Amp/ dmů anodic, 20 °C.

Regards

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




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