HAFNIUM NITRIDE Property

Melting point:

3305°C

Density 

13.800

form 

yellow-brown cubic crystals

color 

yellow-brown cubic crystals, crystalline

Resistivity

33 (ρ/μΩ.cm)

Crystal Structure

Cubic

EPA Substance Registry System

Hafnium nitride (HfN) (25817-87-2)

Safety

WGK Germany 

3

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

HAFNIUM NITRIDE Chemical Properties,Usage,Production

Chemical Properties

yellowish brown crystal(s); fcc, a=0.4518nm; most refractory of all known metal nitrides; hardness 1640kgf/mm2; electrical resistivity 33μohm· cm; can be prepared by heating Hf in N2 or NH3 atmospheric at 1000°C–1500°C; as a 99.5% pure material, used as a sputtering target to increase electrical stability of diodes, transistors, and integrated circuits [KIR80] [KIR81] [HAW93] [CER91]

Chemical Properties

Hafnium nitride is formed as yellow-brown, cubic crystals and is prepared by heating hafnium metal to 1000–1500 C in an atmosphere of nitrogen or ammonia. It can also be prepared by reacting hafnium tetrachloride vapor with nitrogen in a hydrogen atmosphere at temperatures higher than 1000 C.
Hafnium nitride is a brittle solid. The deposition of a thin layer of hafnium nitride on steel grade, cemented carbide, cutting tools reduces frictional forces and wear, thus increasing the life of the tool by a factor of 6–8.

Physical properties

Most refractory of all nitrides.