NIOBIUM NITRIDE Chemical Properties

Melting point:

2573°C

Density 

8,4 g/cm³

solubility 

insoluble in HCl, acid solutions

form 

Powder

Specific Gravity

8.4

color 

gray crystals, crystalline; cubic

Resistivity

78 (ρ/μΩ.cm)

Water Solubility 

Insoluble in water.

Crystal Structure

Cubic

CAS DataBase Reference

24621-21-4(CAS DataBase Reference)

EPA Substance Registry System

Niobium nitride (NbN) (24621-21-4)

Safety Information

TSCA 

Yes

MSDS

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NIOBIUM NITRIDE Usage And Synthesis

Chemical Properties

dark gray; fcc, a=0.4388nm; hardness, 8+ Mohs; electrical resistivity 78μοhm· cm; transition temp 15.2K; can be prepared by heating Nb metal in excess N2 or NH3 to 700°C–1100°C; used in the form of 99.5% pure sputtering target for increasing electrical stability of diodes, transistors, and integrated circuits [KIR81] [CIC73] [CER91]

Physical properties

Dark gray crystals. Transition temperature 15.2 K. Insoluble in HCL, HNO₃ and H₂SO₄; but attacked by hot caustic, lime, or strong alkalis evolving NH₃.

Uses

Niobium nitride (NbN) thin films were noticed at an early stage because of their critical transition temperatures as low as 16-17K which could find wide applications in superconducting microelectronics. Because of its complicated phase diagram, NbN is difficult to prepare in the pure face-centered cubic, rocksalt structure.

Uses

Niobium nitride is used as superconductor. Used in absorbing?anti-reflective coatings. It used to produce arc-welding rods and in steel.

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