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Niobium carbide

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CAS:12069-94-2
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CAS:12069-94-2
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CAS:12069-94-2
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CAS:12069-94-2
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Products Intro: Product Name:Niobium carbide
CAS:12069-94-2

Niobium carbide manufacturers

  • Niobium carbide
  • Niobium carbide pictures
  • $15.00 / 1KG
  • 2021-07-02
  • CAS:12069-94-2
  • Min. Order: 1KG
  • Purity: 99%+ HPLC
  • Supply Ability: Monthly supply of 1 ton
  • Niobium carbide
  • Niobium carbide pictures
  • $1.00 / 1kg
  • 2019-07-06
  • CAS:12069-94-2
  • Min. Order: 1kg
  • Purity: 99%
  • Supply Ability: Customized

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Niobium carbide Basic information
Product Name:Niobium carbide
Synonyms:NIOBIUM CARBIDE;SILICON, PIECES, 99.95%;COLUMBIUM CARBIDE;Niobium(IV) carbide;Niobium carbide, 99+% (metals basis);Niobium monocarbide;Niobium carbide, 99% trace metals basis;Niobium carbide powder (NbC)
CAS:12069-94-2
MF:CHNb
MW:105.93
EINECS:235-117-8
Product Categories:Carbides;Ceramics;Metal and Ceramic Science;Inorganics
Mol File:12069-94-2.mol
Niobium carbide Structure
Niobium carbide Chemical Properties
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
Specific Gravity7.6
color White
Resistivity51.1–74.0 (ρ/μΩ.cm)
Water Solubility Insoluble in water.
Crystal StructureCubic, NaCl Structure
EPA Substance Registry SystemNiobium carbide (NbC) (12069-94-2)
Safety Information
RIDADR UN3178
WGK Germany 3
TSCA Yes
HazardClass 4.1
PackingGroup III
MSDS Information
ProviderLanguage
Niobium carbide English
SigmaAldrich English
ALFA English
Niobium carbide Usage And Synthesis
Chemical PropertiesNiobium 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 propertiesLavender gray powder, soluble in HF-HNO3 mixture. Wear resistant film, coating graphite in nuclear reactors. Oxidation in air becomes severe only above 1000°C.
UsesNiobium 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.
Applicationniobium 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 ExplosibilityNon flammable
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