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Stripping silver from Nickel




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 sulfuric/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/dm… with a steel cathode.

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

Regards

Anders Sundman
Anders Sundman
4th Generation Surface Engineering
Consultant - Arvika,
Sweden
1999




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