Zirconium nitride

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

Zirconium nitride

Zirconium nitride in the unit cell
Names
IUPAC name Zirconium nitride
Other names Zirconium(III) nitride, Nitridozirconium
Identifiers
CAS Number	25658-42-8 Y
3D model (JSmol)	(Zr≡N): Interactive image
ChEBI	CHEBI:197403
ChemSpider	85159 N
ECHA InfoCard	100.042.864
EC Number	247-166-2
PubChem CID	94359
CompTox Dashboard (EPA)	DTXSID2067119
InChI InChI=1S/N.Zr N Key: ZVWKZXLXHLZXLS-UHFFFAOYSA-N N
SMILES (Zr≡N): N#[Zr]
Properties
Chemical formula	ZrN[1]
Appearance	Yellow-brown crystals
Odor	Odorless
Density	7.09 g/cm3 (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
Heat capacity (C)	40.442 J/(mol·K)[3]
Std molar entropy (S⦵298)	38.83 J/(mol·K)[3]
Std enthalpy of formation (ΔfH⦵298)	−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). N verify (what is YN ?) Infobox references

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 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.

Zirconium nitride was suggested as a hydrogen peroxide fuel tank liner for rockets and aircraft.^[6]