Zirconium nitride

Zirconium nitride

Names
IUPAC name Zirconium nitride
Other names Zirconium(III) nitride, Nitridozirconium
Identifiers
CAS Number	25658-42-8
ChemSpider	85159
EC Number	247-166-2
Jmol 3D image	(Zr≡N): Interactive graph
PubChem	94359
InChI (Zr≡N): InChI=1S/N.Zr Key: ZVWKZXLXHLZXLS-UHFFFAOYSA-N
SMILES (Zr≡N): N#[Zr]
Properties
Chemical formula	ZrN[1]
Appearance	Yellow-brown crystals
Odor	Odorless
Density	7.09 g/cm^3 (24 °C)[1]
Melting point	2,952 °C (5,346 °F; 3,225 K) at 760 mmHg[1]
Solubility in water	Insoluble
Solubility	Soluble in concentrated HF, acids[1]
Structure
Crystal structure	Cubic, cF8[2]
Space group	Fm3m, No. 225[2]
Lattice constant	a = 4.5675 Å[2] α = 90°, β = 90°, γ = 90°
Coordination geometry	Octahedral[2]
Thermochemistry
Specific heat capacity (C)	40.442 J/mol·K[3]
Std molar entropy (S^o298)	38.83 J/mol·K[3]
Std enthalpy of formation (ΔfH^o298)	−365.26 kJ/mol[3]
Related compounds
Related refractory ceramic materials	Tantalum carbide Niobium carbide Zirconium carbide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Zirconium nitride (ZrN) is an inorganic compound used in a variety of ways due to its properties.

Properties

ZrN grown by physical vapor deposition (PVD) is a light gold color similar to elemental gold. ZrN has a room-temperature electrical resistivity of 12.0 µΩ·cm, a temperature coefficient of resistivity of 5.6·10⁻⁸ Ω·cm/K, a superconducting transition temperature of 10.4 K, and a relaxed lattice parameter of 0.4575 nm. The hardness of single-crystal ZrN is 22.7±1.7 GPa and elastic modulus is 450 GPa.^[4]

Uses

Zirconium nitride coated cutters.

Zirconium nitride is a hard ceramic material similar to titanium nitride and is a cement-like refractory material. Thus it is used in refractories, cermets and laboratory crucibles. When applied using the physical vapor deposition coating process it is commonly used for coating medical devices,^[5] industrial parts (notably drill bits), automotive and aerospace components and other parts subject to high wear and corrosive environments.^[6]

Also zirconium nitride was suggested as a hydrogen peroxide fuel tank liner for rockets and aircraft.^[7]

References

1. Lide, David R., ed. (2009). CRC Handbook of Chemistry and Physics (90th ed.). Boca Raton, Florida: CRC Press. ISBN 978-1-4200-9084-0.
2. Sirajuddeen, M. Md. Sheik.; Banu, I. B. S. (2014). "FP-LAPW investigation of electronic, magnetic, elastic and thermal properties of Fe-doped zirconium nitride". AIP Advances 4 (5): 057121. doi:10.1063/1.4879798.
3. Zirconium nitride in Linstrom, P.J.; Mallard, W.G. (eds.) NIST Chemistry WebBook, NIST Standard Reference Database Number 69. National Institute of Standards and Technology, Gaithersburg MD. http://webbook.nist.gov (retrieved 2014-06-30)
4. Mei, A. B.; Howe, B. M.; Zhang, C.; Sardela, M.; Eckstein, J. N.; Hultman, L.; Rockett, A.; Petrov, I.; Greene, J. E. (2013). "Physical properties of epitaxial ZrN/MgO(001) layers grown by reactive magnetron sputtering". Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 31 (6): 061516. doi:10.1116/1.4825349.
5. "IonFusion Surgical". IonFusion Surgical, Inc. Retrieved 2014-06-30.
6. "Product Development". Coating Services Group. Retrieved 2014-06-30.
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