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topic 4497

Plating/Coating Titanium with Platinum


(2000)

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


(2000)

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

Marcus Hahn
- Sachseln, Switzerland


(2000)

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 -->



(2000)

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

----
Ed. note: Letter 35217 also addressed electroless platinum plating.


(2001)

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

----
Ed. note: If you are at liberty to reveal something about this plating process, please join the discussion, Cousin H.H. This forum is for camaraderie & technical discussions, and is made possible by generous supporting advertisers. You are welcome to advertise here if you wish, but sorry, we can't thank our advertisers for their support by letting their money be spent steering business away from them and towards shops who don't support the site, so we cannot include your contact info :-)
Thanks for your understanding folks.




(2004)

Q. I'd like to know how to plate platinum onto titanium strip without blasting. How to ensure adhesion.

Kelvin Kau
Metal works - Tokyo, Japan


(2004)

A. Hi cousin Kelvin. Getting good adhesion onto titanium is very difficult, so before we go too far in a difficult direction that may not even be necessary, may I ask if you are aware that platinum clad titanium material is commercially available?

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


(2004)

Q. I had experimented on using various acids to etch the Titanium strips but was unable to get adhesion of Platinum on Titanium during plating. I had baked the strip for about 30 minutes but without avail. Do you know of any process or someone who can offer advice?

Kelvin Kau
- Tokyo, Japan


(2004)

A. Getting good adhesion onto titanium from conventional aqueous electroplating is a well known issue. Volume 5 of the ASM Metals Handbook, "Surface Engineering" (the ninth edition will suffice too) covers the problem is fairly good depth. Some people use the cleaning/pretreatment methods in that book, then nickel plate, then do a high temperature bake to diffuse nickel into the titanium. Then they activate and plate the nickel.

There are many suppliers of platinized titanium anodes around the world who can build exactly the components you seek if you don't have a special reason to do it yourself. Good luck.

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



Need Gold or Platinum Plating onto Titanium Foam

(2004)

Seeking Gold or Platinum Plating on Titanium Foam/Expanded Metal Package. 6.285" diameter discs, From 0.0051" thick to 0.046" thick, Qty from 100-500 depending on quality. Will require a sample before purchasing. Precious metals only, cannot use nickel or copper strikes. No palladium-nickel.

Kristy F. [last name deleted for privacy by Editor]
Engineering R&D - College Station, Texas
^- Sorry, this RFQ is outdated
     View Current RFQs




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



Pretreatment of titanium for good plating adhesion

 

Hi,

I would like to plate some very delicate pieces of titanium with platinum. Right now I use a NaOH and HCl cleaning prior to a gold strike and then finally the platinum electroplating. The problem is that I have some adhesion problems. I suspect it may due to the titanium dioxide that builds on every raw titanium piece. Is it really the case and what should I use to dissolve the titanium dioxide before doing my deposition?

Thanks!

Marie-Maude de Denus Baillargeon
- Montreal, Quebec, Canada


 

Yes, it really is the case. Simple pretreatment cycles of NaOH followed by HCl are often fine for steel parts, but they are inadequate for titanium. See ASM's Metals Handbook, "Surface Engineering" for pretreatment cycles for titanium. Good luck.

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

(2000)

adv.
Our company has technology of plating Pt on Ti, if intermediate thin layer of Ni (0.1-0.5 micron) is acceptable for your application.

anna_berkovich
Anna Berkovich
Russamer Labs
supporting advertiser 
Pittsburgh, Pennsylvania
russamer labs banner



April 11, 2012 -- this entry appended to this thread by editor in lieu of spawning a duplicative thread

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 will 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 Masalonga
plating shop employee - San Pedro, Laguna, Philippines


April 11, 2012

A. Hi Danny.

In terms of the answers that have already been offered, do you think plating out of molten salts as suggested by Marcus will 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, and it must be aqueous electroplating, 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. Best of luck!

Regards,

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



Platinum plating on inside of titanium tube

August 5, 2014

Q. I would like to platinize the inside of a titanium tube. How can this be achieved in the easiest possible way?

Nick polous
- United Kingdom


August 6, 2014

A. Hi Nick

The simple answer is that you don't. It is a highly specialised process and you do not even give the size of the tube - microns or meters!

You are probably not aware that you can simply buy the material ready made. A few seconds search on "platinised titanium" turns up a number of suppliers that may have exactly what you want.

geoff smith
Geoff Smith
Hampshire,
       England



August 6, 2014

Q. Thanks for your reply Geoff.

I should have been more clear, actually I have a small cylindrical titanium block with a 2 mm bore drilled through the centre. It is this 2mm bore only that I would like to platinize and not the entire piece. Does this required specialised equipment and if so what kind of equipment are we talking about?

Nick

Nick Polous [returning]
- United Kingdom


August 2014

A. Hi Nick. We appended your inquiry to a thread on the same topic, discussing several different possible approaches, none of which are easy, but the "electroless platinum plating" is probably the least difficult.

But is there any chance you could just bore that hole a little bigger and press fit a platinum tube into it? It would likely be world's easier :-)

Regards,

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


August 7, 2014

A. Nick, This can be achieved by special surface preparation of the ID surface. After that you can plate anything on titanium. In order to isolate other surfaces, the tiny cathode wire is inserted into the tube.

adv.
We have done similar works. Contact us for help.

anna_berkovich
Anna Berkovich
Russamer Labs
Pittsburgh, Pennsylvania



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