Evaluation of elastic property of (CeO 2) 1-x(YO 1.5)x ceramics

Translated title of the contribution: Evaluation of elastic property of (CeO 2) 1-x(YO 1.5)x ceramics

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Abstract

The influences of the sintering additive content of Y 2O 3 on elastic modulus of ceria ceramics were investigated by small punch (SP) testing method and molecular dynamics (MD) method. Y 2O 3 doped ceria powders with a composition of (CeO 2) 1-x(YO 1.5) x (x=0, 0.10, 0.15, 0.20, 0.30, 0.40) were prepared by a co-precipitation method. The powders were compacted by die pressing (50 MPa) followed by cold isostatic pressing (120 MPa), and sintered at 1500°C in air for 5 h. The elastic modulus was decreased significantly with increasing additive contents of the Y 2O 3 oxides. Especially, it tended to exhibit a minimum value at 10-20 mol%. However, ionic conductivity increased with increasing additive content of the Y 2O 3 oxides, exhibited a maximum value at 15 mol%. Calculation model and interatomic potential were shown to be useful to evaluate the elastic property.

Translated title of the contributionEvaluation of elastic property of (CeO 2) 1-x(YO 1.5)x ceramics
Original languageJapanese
Pages (from-to)840-844
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume52
Issue number11
DOIs
Publication statusPublished - 2005 Nov

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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