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topic 4958

Bright Cobalt Plating


(2000)

Anyone could tell the bath formula for a Bright Cobalt plating. It is used to substitute the Bright Nickel plating. Any books talking the cobalt plating can be suggested ?

Deville Yiu
- Hong Kong, China


(2000)

Dear Mr Yiu,

I think you are referring to tin - cobalt plating done over Nickel plating to give a near chrome like look. It is not a replacement for Nickel. You should contact your nearest Enthone dealer for the chemistry. Regards

Khozem Vahaanwala
Khozem Vahaanwala
Saify Ind supporting advertiser
Bangalore, Karnataka, India

saify logo


(2000)

Nickel and cobalt are very nearly the same. Cobalt is slightly harder, slightly more magnetic, quite a bit whiter, same atomic weight and valence and etc. Any bath that you can find for bright nickel, you can substitute the same amount of a cobalt salt for as in cobalt sulfate for nickel sulfate.

Cobalt is quite a bit more expensive at the current time. Cobalt can be used in jewelry, avoiding the frequent prohibition of "no nickel". It is also unregulated, the last I knew, by EPA.

James Watts
- Navarre, Florida



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