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Ruthenium plating Q&A's



A discussion started in 1995 & continuing through 2017 -- add your Q to bring it back to the Hot Topics page.

(1995)

Q. I would like to communicate with anyone who is involved with the coating of ruthenium, or other platinum-group metals, onto other substrates. Any technique can be used, such as thermal spraying, electroplating, electroless deposition, etc.  

Regards   

Wayne G [last name deleted for privacy by Editor]
University of the Witwatersrand


Ruthenium

Q. Also interested in methods involving Ruthenium electroplating.

Thanks,

David W [last name deleted for privacy by Editor]
USN - Bangor, Washington


(2003)

Q. DEAR SIR,
I AM STUDENT OF MSC ENGINEERING IN PAKISTAN.I NEED RUTHENIUM COATING PROCESS (METHOD, COMPOSITION OF SOLUTIONS, ETC., FOR MY MSC PROJECT.

I SHALL OBLIGE FOR YOU.

SHAHID RASUL
- FAISAL ABAD, PAKISTAN


(2004)

A. Hello, Wayne, David, Shahid. "Electroless Plating" by Mallory & Hajdu has a chapter on electroless plating of Platinum Group Metals, including a couple of pages specifically on Ruthenium. Please see letter 50771, "Electroless plating of ruthenium or iridium" for an ongoing discussion of electroless deposition of Ruthenium.

For discussions on additional Ruthenium deposition methods please see letters 22092 "Q&A's, Problems & Solutions on Ruthenium Plating Process". Please feel free to post any questions. Good luck.

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey




To minimize searching and offer multiple viewpoints, we combined multiple threads into the dialog you're viewing. Please forgive any resultant repetition.



(2002)

Q. What does RUTHENIUM look like and if you have some could you take a picture of it and send it to the email address above? The reason I ask of it for is I'm doing a project for school on ruthenium in chemistry class. If you would and are able to, please do so at your leisure.

THANK YOU,

Jordan B [last name deleted for privacy by Editor]
- Birchwood, Tennessee, USA


(2002)

A. Geez, Jordan, there's a picture right here!

http://www.chemsoc.org/viselements/pages/data/ruthenium_data.html

Which you'd find in a short Google search. You'll notice it's just a silvery-white hunk of metal, kind of like silver, or platinum, or aluminum, or if your digital camera is a cheap as mine, like copper, or cardboard, or...

Good luck!

lee gearhart
Lee Gearhart
metallurgist




Is ruthenium safe?

wikipedia
Ruthenium

April 20, 2009

Q. Hi all,

I have come across jewelry shops that coats rings or pendants with either rhodium or ruthenium. I am interested in buying such jewelry, but I am quite uncertain about its safety. I have browsed online quite a bit and found that rhodium is used often. However, I have not found much about ruthenium. On wikipedia itself, it says ruthenium can stain the skin and be cause cancer =>

I want to know for sure: Is ruthenium or rhodium safe? Even if the jewelry is worn at all times without taking it off?

Please let me know. Thank you very much

Pepe Hu
buyer - Champaign, Illinois, USA


The editor's fave "coffee table book" for years now...
The Elements

April 20, 2009

A. Hi, Pepe. Nothing is sure but death and taxes. But the majority of all women's engagement rings and wedding rings, and all kinds of necklaces and bracelets are rhodium plated -- hundreds of millions of them -- so it's certainly generally accepted as safe.

I'm not as familiar with ruthenium, but Theodore Gray's "The Elements", says "... you're most likely to encounter ruthenium in jewelry, as a thin plating that has a darkish gray, pewter-like shine to it." =>

Further, I do not see any reference to skin stains or carcinogeneity on Wikipedia as you report.

Regards,

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



Ruthenium Pen Plating Solution isn't dark enough

April 25, 2017

Q. Dear All,
I made my own ruthenium pen plating solution includes Ruthenium trichloride and sulfuric acid mixture.
It works very good but I am looking for a more black deposit.
What kind of blackening agent shall I add?

Hope to hear from you soon.
Regards,
Jalal

Jalal Jafari
- Isfahan, Iran
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