Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

High-temperature calorimetry of zirconia: Heat capacity and thermodynamics of the monoclinic tetragonal phase transition

Moriya, Y.[Yosuke], Navrotsky, A.[Alexandra]
J. Chem. Thermodyn. 2006, 38, 3, 211-223
ABSTRACT
The high-temperature heat capacity of zirconia was directly measured by differential scanning calorimetry between T = (1050 and 1700) K and derived from the heat content measured by transposed temperature drop calorimetry between T = (970 and 1770) K, including the monoclinic tetragonal (m t) phase transition region. The enthalpy and entropy of the m t phase transition are (5.43 +- 0.31) kJ.mol-1 and (3.69 +- 0.21) J .K-1 .mol-1, respectively. Values of thermodynamic functions are provided from room temperature to 2000 K.
Compounds
# Formula Name
1 O2Zr zirconium 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 enthalpy, kJ/mol ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • Drop calorimetry
  • 11
  • POMD
  • 1
  • Molar enthalpy, kJ/mol ; Crystal 1
  • Temperature, K; Crystal 1
  • Pressure, kPa; Crystal 1
  • Crystal 1
  • Drop calorimetry
  • 8