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

WGK Germany 

WGK 3

TSCA 

TSCA listed

Storage Class

11 - Combustible Solids

MSDS

• Language:English Provider:ALFA

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

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.

Synthesis

1. Taking metallic niobium and nitrogen as raw materials, the crushed metallic niobium is sent into the nitriding furnace, and then nitrogen or ammonia is introduced to make it react at 700-1100?? to directly synthesize niobium nitride. Or in the crushed metal niobium powder add charcoal powder, so that it is fully mixed and sent to the reduction furnace, and then pass into the hydrogen and nitrogen, at a temperature of 1250 ?? reduction reaction 2h to get niobium chloride.
2.Direct method Prepare niobium nitride from metallic niobium and nitrogen, the reaction formula is as follows: NB2O5+2N+5C==2NbN+5CO.
The crushed metallic niobium is fed into the nitriding furnace, and nitrogen or ammonia gas is introduced to make it react at 700-1100??C for 1-2h, which is obtained as niobium nitride.
3. Reduction method In the presence of carbon, niobium nitride is prepared from niobium pentoxide and nitrogen with the following reaction formula: Nb+N==NbN.
In the crushed metal niobium powder add charcoal powder, so that it is fully mixed and sent to the reduction furnace, and then through the hydrogen and nitrogen, at a temperature of 1250 ?? in the reduction reaction of 2h to get niobium nitride.

NIOBIUM NITRIDE(24621-21-4)Related Product Information

• TITANIUM NITRIDE
• Tungsten carbide
• Silicon nitride
• NIOBIUM(V) CHLORIDE
• GALLIUM NITRIDE
• Trimanganese tetraoxide
• Niobium oxide
• Indium(III) oxide
• Dysprosium oxide
• Titanium carbide
• Molybdenum carbide
• Zirconium carbide
• ZINC NITRIDE
• Chromium carbide
• Diantimony trioxide
• Magnesium nitride
• NIOBIUM
• NIOBIUM NITRIDE