Talk:Titanium nitride

Untitled
''' History? ...Article would benefit from a history section regarding the discovery of the material.--66.41.95.121 (talk) 12:42, 20 April 2012 (UTC)

From Matweb:

Material Notes: Thin film coating applied by environmentally safe, Physical Vapor Deposition (PVD) vacuum system. Can be applied to most metals to provide enhanced surface characteristics, and can also be applied to some ceramics and plastics. Has the appearance of gold, but is an ultra-hard material. Is harder than carbide and chrome, approximately 85 Rc. Is highly inert - Will not corrode and has excellent chemical resistance. Provides a non-stick surface. Prevents galling. Can withstand elevated temperatures. Is non-toxic - Used for surgical devices and food processing equipment. Is dense and non-porous. Is typically 3 micrometers or 0.0001" thick. Has a uniform thickness that follows the contour of the part's surface. Forms an outstanding bond to the base material that will not blister, flake or chip. Cutting tools typically last 3 to 10 times longer than uncoated tools.

To do: work more of this into the article.

Titanium Nitride is more than likely derived from Osbornite, which following source explains was found in the early 1800s. Osbornite is a mineral found in meteors, and extremely rare. https://www.mindat.org/min-3035.html — Preceding unsigned comment added by 174.140.111.29 (talk) 21:51, 19 December 2017 (UTC)
 * Osbornite is already mentioned in the article.--Srleffler (talk) 03:09, 20 December 2017 (UTC)

Knives Do Not Belong
The article states the material is gold colored and due to the IR absorption spectrum, the coated pieces and the drill bit is also gold colored. Why is the first knife black colored and the second one rainbow colored. Are these actual TiN coated knives or another Ti alloy? Please verify this and explain the non gold color. — Preceding unsigned comment added by 98.64.201.57 (talk) 00:59, 24 June 2012 (UTC)
 * I think the black knife is TiCN coating, which is not actually TiN. --Flightsoffancy (talk) 17:45, 6 March 2015 (UTC)

Fake TiN coatings
Section needs to be made about fake TiN coatings, claimed to be and simply called "Titanium", which may simply be yellow paint(!). I will try to start, but if I cant hope someone will. --Flightsoffancy (talk) 17:46, 6 March 2015 (UTC)

Characteristics
The section below needs to be reworked by someone who has access to the source material, or utilizing new sources. The final sentence mentions "The book" which appears to be a reference to the book cited [citation 1] where all of the earlier numbers were copied from.

"TiN will oxidize at 800 °C at normal atmosphere. It is chemically stable at room temperature and is attacked by hot concentrated acids. ( Chemically stable at 20 degrees Celsius, tested in laboratory. Reference states that the coating will be slowly attacked by concentrated acid solutions with rising temperatures. The book does not reference specific temperatures related to the increase of acidic corrosion, though the reference states that it is inert at 20 degrees Celsius. )[1]" Traicovn (talk) 00:12, 11 November 2015 (UTC)

Assessment comment
Substituted at 08:53, 30 April 2016 (UTC)