Electron microscopic observation of rapidly cooled ZrO2-3 mol% Sm2O3 from the melt

M. Hayakawa, Y. Onda, M. Oka, M. Yoshimura, M. Yashima

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2 Citations (Scopus)

Abstract

Electron microscopic observation was made on ZrO2-3 mol % Sm2O3 specimens prepared from the melt using two different cooling rates, namely rapid quenching using a hammer-anvil apparatus and free cooling on a water-cooled copper hearth. The observed microscopic features, such as fully tetragonal grains with parallel twins or herringbone structure, anti-phase boundary contrast in a dark-field image, tweed structure, etc., were found to be quite similar to those observed in similarly prepared ZrO2-3 mol % Y2O3 specimens. It was specifically noted that the tweed structure, which requires atomic diffusion, was not suppressed by the rapid quenching, indicating a very fast growth rate. Trace analysis was also conducted on the tweed structure observed in freely cooled specimens.

Original languageEnglish
Pages (from-to)6066-6069
Number of pages4
JournalJournal of Materials Science
Volume28
Issue number22
DOIs
Publication statusPublished - 1993 Jan 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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