Titanium nitride

Titanium nitride
Names
	IUPAC name Titanium nitride
	Other names Titanium(III) nitride
Identifiers
CAS Number	25583-20-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	84040 ;
ECHA InfoCard	100.042.819
EC Number	247-117-5;
PubChem CID	93091;
UNII	6RW464FEFF ;
CompTox Dashboard (EPA)	DTXSID8067109 ;
	InChI InChI=1S/N.Ti;
	SMILES N#[Ti];
Properties
Chemical formula	TiN
Molar mass	61.874 g/mol
Appearance	Brown as a pure solid, coating of golden color
Odor	Odorless
Density	5.21 g/cm3
Melting point	2,947 °C (5,337 °F; 3,220 K)
Solubility in water	insoluble
Magnetic susceptibility (χ)	+38×10−6 emu/mol
Thermal conductivity	29 W/(m·K) (323 K)
Structure
Crystal structure	Face-centered cubic (FCC), cF8
Space group	Fm3m, No. 225
Lattice constant	a = 0.4241 nm
Formula units (Z)	4
Coordination geometry	Octahedral
Thermochemistry
Heat capacity (C)	24 J/(K·mol) (500 K)
Std molar; entropy (S⦵298)	−95.7 J/(K·mol)
Std enthalpy of; formation (ΔfH⦵298)	−336 kJ/mol
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). verify (what is ?) Infobox references

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]

^ ^a ^b Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.92. ISBN 9781498754293.
^ ^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.
^ Lengauer, Walter (1992). "Properties of bulk δ-TiN_1−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.
^ ^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.
^ "TiN (Titanium Nitride) – Surface Coating". Retrieved 2024-02-17.

[crc-1] Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.92. ISBN 9781498754293.

[th2-2] 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-TiN_1−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.

[th1-4] 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.

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