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Niobium carbide

CAS No.12069-94-2
Chemical Name:Niobium carbide
CBNumber:CB5484548
Molecular Formula:CHNb
Formula Weight:105.93
MOL File:12069-94-2.mol

Niobium carbide Property

Melting point 3500°C
Boiling point 4300°C
Density 7.6 g/mL at 25 °C(lit.)
solubility insoluble in H2O, acid solutions
form Powder
color White
Specific Gravity 7.6
Resistivity 51.1–74.0 (ρ/μΩ.cm)
Water Solubility Insoluble in water.
Crystal Structure Cubic, NaCl Structure
EPA Substance Registry System Niobium carbide (NbC) (12069-94-2)
UNSPSC Code 12352103
NACRES NA.23

Safety

RIDADR :UN3178
WGK Germany :3
TSCA :Yes
HazardClass :4.1
PackingGroup :III

NFPA 704:

	2
0		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordWarning
Hazard statements H228
Precautionary statements P210-P240-P241-P280-P370+P378a

Niobium carbide Price More Price(2)

Brand: ALFA India
Product number: ALF-012147-22
Product name : Niobium carbide, 99+% (metals basis)
Purity:
Packaging: 100g
Price: ₹17116
Updated: 2022/05/26
Buy: Buy

Brand: ALFA India
Product number: ALF-012147-14
Product name : Niobium carbide, 99+% (metals basis)
Purity:
Packaging: 25g
Price: ₹5036
Updated: 2022/05/26
Buy: Buy

Niobium carbide Chemical Properties,Usage,Production

Chemical Properties Niobium carbide is a green cubic crystal with metallic luster and belongs to the sodium chloride type cubic crystal system. The relative density is 8.47, the lattice constant a=0.447nm, and the melting point is 2300°C. Microhardness>235Gpa (>2400kg/mm2), harder than corundum. Elastic modulus 338000N/mm2, thermal expansion coefficient 6.65×10-6/K, thermal conductivity 14w/(m.K), heat of formation -140.7kJ/mol, specific heat capacity 36.8J/(mol.K), resistivity 35μΩ.cm. Insoluble in water and in all acids except a mixture of nitric acid and hydrogen fluoride. It is stable at 1000-1100°C, and rapidly oxidizes to niobium pentoxide at temperatures above 1100°C. Niobium carbide is easy to melt in titanium carbide, zirconium carbide, tungsten carbide and other compounds, and together form an isomorphous solid solution mixture.
Physical properties Lavender gray powder, soluble in HF-HNO₃ mixture. Wear resistant film, coating graphite in nuclear reactors. Oxidation in air becomes severe only above 1000°C.
Uses Niobium carbide (NbC) is amongst the hardest technical compounds known. It should thus be excellently suited for machining applications and wear protection. It is used to make hard-tipped tools and special steels and to coat graphite in nuclear reactors.
Application niobium carbide (NbC) is extremely hard refractory materials. TiC, ZrC, VC and NbC are commercially used in tool bits for cutting tools. HfC and NbC can also be used as refractory coatings in nuclear reactors.
Flammability and Explosibility Non flammable