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Rhodium plating problem: not white anymore

Q. Hello sir,

I am facing a rhodium plating problem.

Please can you let us know the procedure how to do rhodium please we just require the whiteness; that's the problem we are facing please.

Thank you.

Regards,

Aman Mehta
- Mumbai, India
October 2, 2008

Q. Hello sir
Even I am facing the same problem with my rhodium solution; it is new.

Pavan soni
- Shahada, Maharashtra
July 22, 2011

A. Hi, Pavan. The supplier of your rhodium plating solution can probably help you with what operating condition is causing the problem. But thread 42108 addresses the issue in pretty good depth. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

I plate the rhodium for a year and always add rhodium to maintain the rhodium level by using AMPERE MINUTE. So I do not need to count the Amperes to add rhodium into the bath.

Now I got serious problem about my plating. My rhodium is not white anymore. It's turn to be grey color. Could you please explain to me about this problem and what is the solution?

I afraid that my rhodium is run out. What will be if rhodium run out. What is the result from this plating?

Thanks a lot for your kindness.

Bear Chiang
plating shop - Thailand
March 9, 2011

Metallic contamination will cause rhodium to plate gray.

Neil Bell
Red Sky Plating

Albuquerque, New Mexico

Rhodium solution gets easily contaminated with metallics. You can carbon treat your rhodium solution to remove the metallic contamination. Top up your rhodium content after carbon treatment.

SK Cheah
- Penang, Malaysia

Some metallic contaminants can be removed from rhodium solution using potassium ferrocyanide [affil links] and filtering but carbon treatment will only remove organic contamination.

Neil Bell
Red Sky Plating

Albuquerque, New Mexico

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