Density 7.6 G/Cm³ Niobium Carbide Powder 105.925 Weight For Making Cement Tools

 

CAS Number 12069-94-2

Product Name Niobium Carbide

Synonyms Methane - Niobium (1:1); Methylidyneniobium; Niobium Carbide (nbc); Niobium(iv) Carbide

Molecular Formula NbC

Molecular Weight 105.925

InChI 1/CH.Nb/h1H;/rCHNb/c1-2/h1H

EINECS 235-117-8

Physical Data

Appearance Green Cubic Crystals With Metallic Luster

Density 7.6

Melting Point 3500ºC

Other Cas No. 155969-44-1

 

Niobium carbide is a green cubic crystal with a metallic luster, which belongs to the cuboid system of sodium chloride.

The relative density is 8.47, the lattice constant a=0.447nm,

The melting point is 2300 degrees centigrade. The microhardness is >235 Gpa (>2400 kg/mm2), and [1] is harder than corundum. The elastic modulus is 338000 N/mm2, the thermal expansion coefficient is 6.65 x 10^ (-6) /K, the thermal conductivity is 14 w/ (m K), the heat -140.7 kJ/mol is generated, the specific heat capacity is 36.8 J/ (mol / mol), and the resistivity is 35 ohm.

Insoluble in cold and hot hydrochloric acid, sulfuric acid and nitric acid, dissolved in a mixed solution of hot hydrofluoric acid and nitric acid. It is stable at 1000~1100 C and rapidly oxidizes to five niobium oxide at more than 1100 C. Niobium carbide in fusible titanium carbide, zirconium carbide, tungsten carbide and other compounds, and together produce isomorphous mixture solution. Melting point: 3500 DEG C, density: 7.6g/cm fand (25 C)