Titanium nitride

Titanium nitride
Brown powdered titanium nitride
The structure of sodium chloride; titanium nitride's structure is similar.
Names
IUPAC name
Titanium nitride
Other names
Titanium(III) nitride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.042.819 Edit this at Wikidata
EC Number
  • 247-117-5
UNII
  • InChI=1S/N.Ti
  • N#[Ti]
Properties
TiN
Molar mass 61.874 g/mol
Appearance Brown as a pure solid, coating of golden color
Odor Odorless
Density 5.21 g/cm3[1]
Melting point 2,947 °C (5,337 °F; 3,220 K)[1]
insoluble
+38×10−6 emu/mol
Thermal conductivity 29 W/(m·K) (323 K)[2]
Structure[3]
Face-centered cubic (FCC), cF8
Fm3m, No. 225
a = 0.4241 nm
4
Octahedral
Thermochemistry
24 J/(K·mol) (500 K)[2]
−95.7 J/(K·mol)[4]
−336 kJ/mol[4]
Related compounds
Related coating
Titanium aluminum nitride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Titanium nitride (TiN; sometimes known as tinite) is an extremely hard ceramic material, often used as a physical vapor deposition (PVD) coating on titanium alloys, steel, carbide, and aluminium components to improve the substrate's surface properties.

Applied as a thin coating, TiN is used to harden and protect cutting and sliding surfaces, for decorative purposes (for its golden appearance), and as a non-toxic exterior for medical implants. In most applications a coating of less than 5 micrometres (0.00020 in) is applied.[5]

  1. ^ a b Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.92. ISBN 9781498754293.
  2. ^ a b Lengauer, W.; Binder, S.; Aigner, K.; Ettmayer, P.; Guillou, A.; de Buigne, J.; Groboth, G. (1995). "Solid state properties of group IV‑b carbonitrides". Journal of Alloys and Compounds. 217: 137–147. doi:10.1016/0925-8388(94)01315-9.
  3. ^ Lengauer, Walter (1992). "Properties of bulk δ-TiN1−x prepared by nitrogen diffusion into titanium metal". Journal of Alloys and Compounds. 186 (2): 293–307. doi:10.1016/0925-8388(92)90016-3.
  4. ^ a b Wang, Wei-E (1996). "Partial thermodynamic properties of the Ti-N system". Journal of Alloys and Compounds. 233 (1–2): 89–95. doi:10.1016/0925-8388(96)80039-9.
  5. ^ "TiN (Titanium Nitride) – Surface Coating". Retrieved 2024-02-17.