To journal of phase equilibria and diffusion phase relationship of the BaO-ZrO 2-YO 1.5 system at 1500 and 1600 °c

Susumu Imashuku, Tetsuya Uda, Yoshitaro Nose, Yasuhiro Awakura

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Phase relationship of a BaO-ZrO 2-YO 1.5 system at 1500 and 1600 °C was examined in order to determine whether a phase separation at the composition of 15% yttrium-doped barium zirconate exists. According to a pseudoternary phase diagram of the BaO-ZrO 2-YO 1.5 system established by this work, the solubility of yttria into cubic barium zirconate at 1600 °C is 0.25 in a mole fraction of yttria (X YO15). Thus, we confirmed that there is no phase separation at the composition of 15% yttrium-doped barium zirconate at 1600 °C. On the other hand, at 1500 °C, there might be a phase separation at the composition of 15% yttrium-doped barium zirconate into yttrium-doped barium zirconate where quite small amount of yttrium is doped and a new phase whose composition is close to reported BZ(II) phase.

Original languageEnglish
Pages (from-to)348-356
Number of pages9
JournalJournal of Phase Equilibria and Diffusion
Volume31
Issue number4
DOIs
Publication statusPublished - 2010 Aug 1
Externally publishedYes

Keywords

  • phase diagram
  • phase equilibria
  • solid solution
  • solubility limit
  • temperature
  • thermodynamics

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Materials Chemistry

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