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Platinum Plating On Titanium
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Q. I'm looking for information about plating platinum on some small to medium sized titanium parts. The platinum is required for corrosion resistance not appearance. Good adhesion is critical. Any suggestions are welcome.
Bob B [last name deleted for privacy by Editor]- Rochester New York
.A. Dear Bob
Plating titanium with platinum is usually done in melt of salts (KCN and K2Pt(CN)4), using the titanium as cathode and platinum as an anode. There are very few firms that use this process for making anodes e.g. for chrome baths. You can ask also suppliers for platinum plated titanium anodes for chrome baths where they plate them and maybe you find someone there who can plate your parts,too.
Good luck
Marcus Hahn
Marcus
- Sachseln, Switzerland
.A. Plating on to metals like titanium, zirconium, uranium, etc, that are very oxygen active is often done with ion plating, a PVD process. In some cases a "strike" is put on by ion plating and the coating built up by electroplating.
- Donald M. Mattox
Society of Vacuum Coaters
Albuquerque, New Mexico- Ed. note:
Mr. Mattox is
the author of --
.A. Bob,
Electroless platinum plating technology might be applicable to your particular situation. A nickel strike may be required in order to get good adhesion onto the substrate. Good luck with your search.
Jeff Venarsky
- Jerseyville, Illinois
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Ed. note: Letters 259 and 35217 also address electroless platinum plating.
+A. Dear Mr.Bob B.,
We electrodeposit platinum on titanium with plating thickness up to 10 micron with good adhesion properties.
H.H.Madhani
plating shop - Pune, MH, India
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Ed. note: If you are at liberty to reveal something about your plating process, please join the discussion, M.H. This forum is for camaraderie and technical discussions, and is made possible by generous supporting advertisers. Sorry, but we cannot thank them for their support by letting the forum be used to steer business away from them and towards shops who don't support it. Thanks for your understanding.
April 11, 2012
Q. We are engaged in electroplating business since the 1980s and lately, we are receiving a lot of inquiries regarding the subject. We've been trying to find answers through surfing the internet but could not get the proper forum. We wlll appreciate it very much if anyone can furnish us the names of chemicals to be used and how to process. Thank you and we are hopeful a reply is forthcoming.
Danny Masalongaplating shop employee - San Pedro, Laguna, Philippines
^- Privately contact this inquirer -^
April 11, 2012
A. Hi Danny.
Please try your best to frame your question in terms of the answers that have already been offered. Will plating out of molten salts as suggested by Marcus be practical for your shop? Are you willing to invest in a PVD system as suggested by Donald? Do you feel that electroless plating as suggested by Jeff may be satisfactory?
If none of these seem appropriate for your situation, please consult ASM Metals Handbook Vol. 5 for pretreatment processes for titanium, like nickel plating with a post-plate baking for diffusion, then activate the diffused nickel, and electroplate with a commercial platinum plating bath. Good luck!
Regards,
Ted Mooney, P.E. RET
finishing.com
Brick, New Jersey
