Solidification Microstructure of Y<SUB>2</SUB>O<SUB>3</SUB>-Added Al<SUB>2</SUB>O<SUB>3</SUB>–ZrO<SUB>2</SUB> Eutectic
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- Echigoya J.
- Department of Materials Science, Faculty of Engineering, Tohoku University
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- Takabayashi Y.
- Graduate Student, Tohoku University
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- Sasaki K.
- Research Institute of Iron, Steel and Other Metals, Tohoku University
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- Hayashi S.
- Research Institute of Iron, Steel and Other Metals, Tohoku University
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- Suto H.
- Department of Materials Science, Faculty of Engineering, Tohoku University
書誌事項
- タイトル別名
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- Solidification Microstructure of Y<SUB>2</SUB>O<SUB>3</SUB>-Added Al<SUB>2</SUB>O<SUB>3</SUB>–ZrO<SUB>2</SUB> Eutectic
抄録
The microstructure of the Al2O3–ZrO2 eutectic with addition of a small amount of Y2O3 has been studied. The eutectic composition was determined as 59 mol%Al2O3–36.8 mol%ZrO2–4.2 mol%Y2O3. The added Y2O3 (2.1–5.3 mol%) dissolved only in the ZrO2 phase and the crystal structure of this phase changed from monoclinic to tetragonal+cubic and cubic depending on the amount of Y2O3. Several orientation relationships were found between the ZrO2 and Al2O3 phases. The Al2O3–ZrO2 eutectic contained twins in the ZrO2 phase. Cracks were observed in the Al2O3 matrix and at the Al2O3/ZrO2 interface. The orientation relationship between monoclinic ZrO2 and Al2O3 can be interpreted to be affected by the difference in the thermal expansion coefficient between ZrO2 and Al2O3.
収録刊行物
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- Transactions of the Japan Institute of Metals
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Transactions of the Japan Institute of Metals 27 (2), 102-107, 1986
社団法人 日本金属学会
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詳細情報
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- CRID
- 1390001205117826176
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- NII論文ID
- 130003486281
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- ISSN
- 24324701
- 00214434
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可