High‐Temperature X‐ray Study of the Cubic‐Tetragonal Diffusionless Phase Transition in the ZrO2─ErO1.5 System: I, Phase Change between Two Forms of a Tetragonal Phase, t′‐ZrO2 and t″‐ZrO2, in the Compositionally Homogeneous 14 mol% ErO1.5‐ZrO2

Masatomo Yashima, Nobuo Ishizawa, Masahiro Yoshimura

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The cubic‐tetragonal phase transition of 14 mol% ErO1.5‐ZrO2 was investigated through high‐temperature powder X‐ray diffraction. A new tetragonal form without tetragonality, t″‐ZrO2, was taken into consideration, although only two forms of t‐ and t′‐ZrO2 have previously been distinguished. The metastable t″‐ZrO2, which could be obtained by rapid quenching of 14 mol% ErO1.5‐ZrO2 melts, partially changed into t′‐ZrO2 through a thermal activation process above 500°C. The t′‐ZrO2 continuously changed into t″‐ZrO2 or transformed into cubic phase at about 1200°C. The t′‐t″ change occurred reversibly below 1100°C.

Original languageEnglish
Pages (from-to)641-648
Number of pages8
JournalJournal of the American Ceramic Society
Volume76
Issue number3
DOIs
Publication statusPublished - 1993 Jan 1

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

Fingerprint Dive into the research topics of 'High‐Temperature X‐ray Study of the Cubic‐Tetragonal Diffusionless Phase Transition in the ZrO<sub>2</sub>─ErO<sub>1.5</sub> System: I, Phase Change between Two Forms of a Tetragonal Phase, t′‐ZrO<sub>2</sub> and t″‐ZrO<sub>2</sub>, in the Compositionally Homogeneous 14 mol% ErO<sub>1.5</sub>‐ZrO<sub>2</sub>'. Together they form a unique fingerprint.

  • Cite this