Thermodynamics and vaporization of ceramics based on the Y 2 O 3 -ZrO 2 system studied by KEMS

Eugene N. Kablov, Valentina L. Stolyarova, Viktor A. Vorozhtcov, Sergey I. Lopatin, Fedor N. Karachevtsev

Research output

2 Citations (Scopus)

Abstract

The ceramics based on the Y 2 O 3 -ZrO 2 system is promising for development of refractory materials including ultra-high temperature ceramics. In the present study the samples of the Y 2 O 3 -ZrO 2 system were synthesized by the solid-state method. The vaporization processes and thermodynamic properties of the Y 2 O 3 -ZrO 2 system were studied by the Knudsen effusion mass spectrometric method. The vapor composition, the YO, ZrO, ZrO 2 and O partial pressures over the samples as well as the Y 2 O 3 and ZrO 2 activities of the Y 2 O 3 -ZrO 2 system were determined at the temperature 2660 K. Thermodynamic properties (i.e. excess Gibbs energies) of the Y 2 O 3 -ZrO 2 system obtained in the present study can be described in terms of the subregular solution model.

Original languageEnglish
Pages (from-to)606-614
Number of pages9
JournalJournal of Alloys and Compounds
Volume794
DOIs
Publication statusPublished - 25 Jul 2019

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Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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