Thermodynamics Research Center / ThermoML | Thermochimica Acta

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

Hammoud, H.[Hussein], Vaucher, S.[Sebastien], Valdivieso, F.[Francois]
Thermochim. Acta 2015, 617, 83-89
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; A rand A 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.
Compounds
# Formula Name
1 CeO2 ceric oxide
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Small sample (50 mg) DSC
  • 18
  • POMD
  • 1
  • Thermal conductivity, W/m/K ; Crystal
  • Temperature, K; Crystal
  • Pressure, kPa; Crystal
  • Crystal
  • Laser pulse heating
  • 3