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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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https://hal-emse.ccsd.cnrs.fr/emse-01352761
Contributor : Géraldine Fournier-Moulin <>
Submitted on : Tuesday, August 9, 2016 - 2:50:22 PM
Last modification on : Wednesday, June 24, 2020 - 4:19:10 PM

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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, Elsevier, 2015, 617, pp.83-89. ⟨10.1016/j.tca.2015.08.011⟩. ⟨emse-01352761⟩

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