| Project/Area Number |
21560705
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
SUZUKI Tohru 独立行政法人物質・材料研究機構, 先端材料プロセスユニット, 主幹研究員 (50267407)
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| Co-Investigator(Kenkyū-buntansha) |
UCHIKOSHI Tetsuo 独立行政法人物質・材料研究機構, 先端材料プロセスユニット, グループリーダー (90354216)
SAKKA Yoshio 独立行政法人物質・材料研究機構, 先端材料プロセスユニット, ユニット長 (00354217)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | コロイドプロセス / 強磁場 / 電気泳動堆積 / 結晶配向 / 積層構造 / 分散制御 / サスペンション / 亀裂偏向 / セラミックス / 電気泳動堆積法 / 配向 / 積層 / アルミナ / 亀裂進展 / セラミック |
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| Research Abstract |
In the microstructure of ceramics the combination of the layered structure and the orientation is very effective for the functionality and mechanical properties, especially crystalline orientation is very important factor. In this study, we focused on the residual stress generated from the different coefficient of the thermal expansion depending on the each crystal axis and the orientation relationship between the crack growth direction and the cleavage direction for analyzing the crack propagation in single component ceramics. The residual stress can be introduced by the layer structure with alternative crystalline orientation, and it can be controlled by the thickness of each layer. The crack is deflected by the residual stress and the fracture mode depended on the crack-growth direction.
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