Editing Titanium (section)

=== Nitrides and carbides ===
[[Titanium nitride]] (TiN) is a refractory solid exhibiting extreme hardness, thermal/electrical conductivity, and a high melting point.<ref>{{Cite journal |last=Saha |first=Naresh |year=1992 |title=Titanium nitride oxidation chemistry: An x-ray photoelectron spectroscopy study |journal=Journal of Applied Physics |volume=72 |issue=7 |pages=3072–3079 |doi=10.1063/1.351465 |bibcode=1992JAP....72.3072S}}</ref> TiN has a hardness equivalent to [[sapphire]] and [[carborundum]] (9.0 on the [[Mohs scale]]),<ref>{{cite web |author=Schubert, E.F. |title=The hardness scale introduced by Friederich Mohs |series=Educational resources |publisher=[[Rensselaer Polytechnic Institute]] |place=Troy, NY |url=https://www.ecse.rpi.edu/~schubert/Educational-resources/Materials-Hardness.pdf |url-status=live |archive-url=https://web.archive.org/web/20100603075632/http://www.rpi.edu/~schubert/Educational-resources/Materials-Hardness.pdf |archive-date=3 June 2010}}</ref> and is often used to coat cutting tools, such as [[drill bit]]s.<ref>{{cite magazine |last=Truini |first=Joseph |date=May 1988 |title=Drill bits |magazine=[[Popular Mechanics]] |volume=165 |issue=5 |page=91 |issn=0032-4558 |url=https://books.google.com/books?id=Z-QDAAAAMBAJ}}</ref> It is also used as a gold-colored decorative finish and as a [[Copper interconnects#Barrier metal|barrier layer]] in [[semiconductor fabrication]].<ref>{{cite book|last=Baliga |first=B. Jayant |year=2005 |title=Silicon carbide power devices |publisher=World Scientific |page=91 |isbn=978-981-256-605-8 |url=https://books.google.com/books?id=LNLVwAzhN7EC}}</ref> [[Titanium carbide]] (TiC), which is also very hard, is found in cutting tools and coatings.<ref>{{cite web |title=Titanium carbide product information |publisher=H.C. Starck |url=http://www.hcstarck.com/titanium_carbide_tic  |access-date=16 November 2015 |archive-url=https://web.archive.org/web/20170922194330/https://www.hcstarck.com/titanium_carbide_tic |archive-date=22 September 2017}}</ref>