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Niobium carbide (NbC)

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Molecular weight: 104.92 Carbon content: 11.45%

Density: 7.82g/cm3 Melting point: 3490°C

Boiling point: 4300°C

Chemical compound

NbC-1: NbC≥99.5 Ct>11 Cf<0.15 Fe<0.08 Si0.02 Al0.015 Ti0.01 W0.01 Mo0.01 O0.15 N0.03 Fsss1.5-2.0μm

NbC-2: NbC≥99.5 Ct>11 Cf<0.15 Fe<0.10 Si0.04 Al0.02 Ti0.02 W0.02 Mo0.02 O0.25 N0.05 Fsss1.5-2.0μm

Class 1

C Total: 10.6-11.4

C Free: <0.15

Size: <2.0um

Class 2

C Total: 11.0-12.0

C Free: <0.30

Size: <2.0-4.0um

Niobium carbide, formula: NBC or Nb2C

Appearance: brown-gray metal powder

Molar mass: 104.917g/mol

Scope: niobium carbide is extremely difficult refractory ceramic material with good stability to chemical reagents and high fusion 3880 °C, and often additive in a firm alloy. Niobium carbide is commercially used in bits for cutting tools. It is also can be used as fire-resistant coverings in nuclear reactors.

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