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

Authors
Journal
The Journal of Chemical Thermodynamics
0021-9614
Publisher
Elsevier
Publication Date
Volume
38
Issue
3
Identifiers
DOI: 10.1016/j.jct.2005.05.002
Keywords
  • Zirconia
  • Heat Capacity
  • Thermodynamic Functions
  • Phase Transition
  • Martensitic Transformation
Disciplines
  • Physics

Abstract

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.

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