NIOBIUM BORIDE Property

Melting point:

2270°C

Density 

7.500

form 

gray orthorhombic crystals

color 

gray orthorhombic crystals, crystalline

Resistivity

40–64.5 (ρ/μΩ.cm)

Crystal Structure

Orthorhombic

CAS DataBase Reference

12045-19-1

EPA Substance Registry System

Niobium boride (NbB) (12045-19-1)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37

Safety Statements 

26-36

WGK Germany 

3

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

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

NIOBIUM BORIDE Chemical Properties,Usage,Production

Chemical Properties

gray powder(s); ortho-rhomb, a=0.3298 nm, b=0.872 nm, c=0.3166nm; resistivity 64.5μοhm· cm at 25°C; refractory material; commonly prepared by hot-pressing boron with niobium or niobium hydride; used as sputtering target with 99.5% purity to produce wear-resistant and semiconductor films, and can provide neutron absorbing layers on nuclear fuel pellets [KIR78] [KIR81] [CER91] [ALF93]

Physical properties

Wear-resistant ; Major uses: semiconductive films, neutron-absorbing layer on nuclear fuel pellets