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 contribution | Evaluation of elastic property of (CeO 2) 1-x(YO 1.5)x ceramics |
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Original language | Japanese |
Pages (from-to) | 840-844 |
Number of pages | 5 |
Journal | Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy |
Volume | 52 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2005 Nov |
ASJC Scopus subject areas
- Mechanical Engineering
- Industrial and Manufacturing Engineering
- Metals and Alloys
- Materials Chemistry