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How we can deposit COBALT on Nickel plated parts?
Is there any electroless or electrolytic COBALT plating process available? We need it urgently. My customer wants to plate in following manner
Base metal- Steel Hardened
Electroless Nickel - 80 microns
Electrolytic Nickel - 200 microns
Cobalt - 5 to 6 micron
How to process the component, electroless & electrolytic Nickel available with us.
job plater - Ahmadnagar, India
February 15, 2011
There certainly is. It can be as a sulphate or as a sulfamate salt in the place of nickel. Everything is the same, only cobalt instead of nickel. You could skip the electrolytic nickel, but cobalt is more expensive, so you will probably want to keep it. It is a beautiful white deposit, almost like chrome, except softer and no blue tint.
There is an electroless cobalt, but it is very dear in price because so few use it.
- Navarre, Florida
February 16, 2011
Thanks,
I will conduct some trials in small bath.
Can we use nickel brightener & additive
What should be pretreatment for both Nickel & Electroless Nickel plating. Pl give guidance.
Good Day Sir,
Plating shop owner - Ahmadnagar, Maharashtra, India
February 20, 2011
Aged nickel or electroless nickel is not easy to activate. If at all possible, go from the nickel plating to a rinse to the cobalt tank with no delay.
A quick dip in 25% HCl may work.
For older material, sulfuric hydrofluoric may work better. There are variants of electrocurrent with sulfuric acid.
On a scrap piece, you might try a short dip in 10% nitric acid, or 10% HCl and 5 % nitric.
It is honestly going to be a trial and error to find what works. Age of the plate means everything for the selection of the pretreatment.
- Navarre, Florida
February 22, 2011
Dear James
Thanks
As soon as I conduct a trial on some small samples,I will reply you the results.
Good Day
prasad
- Ahmadnagar, India
February 25, 2011
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