Optimization of the Thermodynamic Properties of the Sm2O3–Y2O3–HfO2 System at High Temperatures by the Barker Method

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Abstract

Abstract: The thermodynamic properties of the Sm2O3–Y2O3–HfO2 system at 2500 K were modeled based on the generalized lattice theory of associated solutions using experimental data obtained by high-temperature mass spectrometry. A comparison was made between the results of the calculations of the thermodynamic properties of the Sm2O3–Y2O3–HfO2 system using two independent approaches to modeling based on this theory: from the experimental data on the properties of the ternary system and from the data on its boundary binary systems Sm2O3–Y2O3, Sm2O3–HfO2, and Y2O3–HfO2. It was shown that the chemical potentials of the components that were calculated in the studied ternary system using the above approaches much better fit the experimental data in the former case.

Original languageEnglish
Pages (from-to)773-780
Number of pages8
JournalRussian Journal of Inorganic Chemistry
Volume65
Issue number5
DOIs
Publication statusPublished - 1 May 2020

Scopus subject areas

  • Materials Science (miscellaneous)
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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