finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
topic 4554

TiN - Hydrogen Embrittlement?


(2000)

First, are TiN coatings/layers or nitrided titanium parts subject to hydrogen embrittlement? How about nitrided stainless or other steels?

Second, how do the latter compare with TiN for chemical and oxidation resistance? I am interested in using gas nitrided materials and/or materials with nitride coatings to improve the performance of systems that I use.

Dave Lowe
- Mountain View, California USA


(2000)

If TiN is deposited using a PVD technique I don't see why it should show hydrogen embrittlement. This is because most PVD techniques only use Ar and N2 to reactively sputter TiN. I think some CVD techniques use titanium chloride and ammonia. The hydrogen in the ammonia might cause hydrogen embrittlement but I don't know. As to the nitrided steels I would expect it depends on the gas used for nitriding.

As to how TiN holds up to oxidation or corrosion versus nitrided steels? This is dependent on the corrosion environment. TiN is oxidation resistant up to about 1000F.

As a side note, TiN has been used as a hydrogen diffusion barrier on stainless steel vacuum chambers. This seems to indicate that a TiN coated part should resist hydrogen embrittlement in a hydrogen containing environment better than an uncoated steel.

John Davis
John Davis
- Berthoud, Colorado, USA



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.