Electrolytic Nickel plating of tungsten

Dear Sir/Madam, Can anybody help us in advising how to nickel electroplate, our components which are small & precision Tungsten Contact Rivets (size: About 4mm in Dia x 4mm length), Production Parts ( bulk quantity), Plating Thickness Desired: 1~ 2 micron, Finish: Preferably Dull, using Electrolytic Nickel Barrel route.

Presently, we are facing the problem of poor adhesion of nickle on tungsten base metal ( i.e peel-off). Upto 0.5~0.6 micron is achieved, but after that adhesion becomes difficult and plating layer peels-off.

With warm regards,

Vikas Jain

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