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Characteristic
Zirconium carbide (ZrC) is an extremely hard refractory ceramic material, commercially used in tool bits for cutting tools. It is usually processed by sintering.
Chemical formula：ZrC
Molar mass：103.235 g·mol−1
Appearance：Gray refractory solid
Odor：Odorless
Density：6.73 g/cm3 (24 °C)
Melting point：3,532–3,540 °C (6,390–6,404 °F; 3,805–3,813 K)
Boiling point：5,100 °C (9,210 °F; 5,370 K)
Solubility in water：Insoluble
Solubility：Soluble in concentrated H2SO4, HF, HNO3
Crystal structure：Cubic, cF8
Application
Hafnium-free zirconium carbide and niobium carbide can be used as refractory coatings in nuclear reactors. Because of a low neutron absorption cross-section and weak damage sensitivity under irradiation, it finds use as the coating of uranium dioxide and thorium dioxide particles of nuclear fuel. The coating is usually deposited by thermal chemical vapor deposition in a fluidized bed reactor. It also has high emissivity and high current capacity at elevated temperatures rendering it as a promising material for use in thermo-photovoltaic radiators and field emitter tips and arrays.
It is also used as an abrasive, in cladding, in cermets, incandescent filaments and cutting tools.
Characteristic
Zirconium carbide (ZrC) is an extremely hard refractory ceramic material, commercially used in tool bits for cutting tools. It is usually processed by sintering.
Chemical formula：ZrC
Molar mass：103.235 g·mol−1
Appearance：Gray refractory solid
Odor：Odorless
Density：6.73 g/cm3 (24 °C)
Melting point：3,532–3,540 °C (6,390–6,404 °F; 3,805–3,813 K)
Boiling point：5,100 °C (9,210 °F; 5,370 K)
Solubility in water：Insoluble
Solubility：Soluble in concentrated H2SO4, HF, HNO3
Crystal structure：Cubic, cF8
Application
Hafnium-free zirconium carbide and niobium carbide can be used as refractory coatings in nuclear reactors. Because of a low neutron absorption cross-section and weak damage sensitivity under irradiation, it finds use as the coating of uranium dioxide and thorium dioxide particles of nuclear fuel. The coating is usually deposited by thermal chemical vapor deposition in a fluidized bed reactor. It also has high emissivity and high current capacity at elevated temperatures rendering it as a promising material for use in thermo-photovoltaic radiators and field emitter tips and arrays.
It is also used as an abrasive, in cladding, in cermets, incandescent filaments and cutting tools.
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