Dielectric and thermal properties of cerium dioxide up to 1000 degrees C and the effect of the porosity for microwave processing studies - Mines Saint-Étienne Access content directly
Journal Articles Thermochimica Acta Year : 2015

Dielectric and thermal properties of cerium dioxide up to 1000 degrees C and the effect of the porosity for microwave processing studies

Abstract

This work presents the experimental determination of the thermal and dielectric properties of conventionally sintered cerium dioxide (CeO2) samples, with a porosity ranging from 3.68 up to 44.33 vol%. The thermal conductivity, the thermal diffusivity and the heat capacity is determined using Laser Flash analysis and Differential Scanning Calorimetry. A cylindrical microwave cavity was developed to measure dielectric properties up to 1000 °C. The real and imaginary parts of the relative dielectric permittivity; ε′rε′r and ε″rε″r the dielectric loss factor, are obtained using the cavity perturbation theory in TM012 mode at 2.45 GHz. These parameters can be used as inputs for coupled thermo-mechano-electromagnetic modelling of Ceria sintering.
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Dates and versions

emse-01352761 , version 1 (22-04-2024)

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Hussein Hammoud, S. Vaucher, François Valdivieso. Dielectric and thermal properties of cerium dioxide up to 1000 degrees C and the effect of the porosity for microwave processing studies. Thermochimica Acta, 2015, 617, pp.83-89. ⟨10.1016/j.tca.2015.08.011⟩. ⟨emse-01352761⟩
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