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"Finishing Technology Hotline BBS" Postings by Topic

Ed. note: before the internet existed, there was a time when "Sysops" (system operators) ran publics forums via dial-up modems and "BBS" (Bulletin Board System) software. Here is one such discussion from 1993.


Rhodium Plating



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Msg. #3825 in ** Ask Plater B**
Posted on 04/19/93 at 18:49:29
To: ALL From: BILL GREULING - Rhodium chloride electrolyte Does anyone have any ideas about plating rhodium from a chloride bath? Variations on the palladium chloride baths that appear in the literature I've seen do not seem to work too well.

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Msg. #3826 in ** Ask Plater B**
Posted on 04/19/93 at 20:10:33
To: BILL GREULING From: TED MOONEY - Reply To 'Rhodium chloride electrolyte'
Why not sulfate, Bill? I'm not a rhodium plating expert, but everything I've seen in the literature suggests that sulfate is fine, relatively easy, and the generally accepted method. If this your own chloride formulation or a proprietary?

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Msg. #3832 in ** Ask Plater B**
Posted on 04/21/93 at 07:28:44
To: BILL GREULING From: BERL STEIN - Reply To 'Rhodium chloride electrolyte?'
Ted is right, if you look it up in the literature, you'll see sulfate, phosphate and mixed sulfate
- phosphate baths. Why do you want to use chloride? Plater B

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Msg. #3834 in ** Ask Plater B**
Posted on 04/21/93 at 17:00:37
To: BERL STEIN From: BILL GREULING - Reply To 'Rhodium chloride electrolyte?'
The idea is to plate out the rhodium metal in a large quantity of rhodium chloride. One of my customers has somehow come up with a bunch of this RhCl, and wants to pull the metallic out. Thanks!

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Msg. #3841 in ** Ask Plater B**
Posted on 04/22/93 at 12:07:39
To: TED MOONEY From: BILL GREULING - Reply To 'Rhodium chloride electrolyte?'
Hi Ted, No, we're not trying to recover or reprocess in a RCRA sort of way; it's more of an electrolytic refining process we're looking for. The RhCl is not a process by-product; it's this guy's end product that is sold to people who refine out the rhodium. The idea (hope) is to do that ourselves.

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