書誌事項
- タイトル別名
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- Sintering Condition and Microstructure of Translucent Silicon Nitride Ceramics
- 公開日
- 2014
- DOI
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- 10.2497/jjspm.61.575
- 公開者
- 一般社団法人 粉体粉末冶金協会
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説明
Translucent Si3N4 ceramics are expected to use for a special optical application in high temperature and corrosive environment owing to its high mechanical strength and thermal and chemical stability. To achieve the translucency of Si3N4 ceramics, fine-grained microstructure with an appropriate sintering aid is important to reduce light scattering. The Si3N4 ceramics were fabricated by spark-plasma sintering (SPS) with AlN – MgO additive. Fine α – Si3N4 powder with high purity was useful to obtain translucent Si3N4 sintered body. When the additive content was large, α – SiAlON formed, whereas β – Si3N4 formed at a small additive content, revealing the high translucency of both phases in visible light region. The AlN/MgO ratio should be on the SiAlON forming line (AlN/MgO = 3/1) in Si3N4 – AlN – MgO phase diagram. The short-time sintering at high temperature (1850 ˚C, 5 min) by SPS was effective to obtain the dense and fine-grained microstructure, and the transmittance of 22～28 % at the wavelength of 900 nm was achieved under the optimal conditions.
収録刊行物
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- 粉体および粉末冶金
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粉体および粉末冶金 61 (12), 575-581, 2014
一般社団法人 粉体粉末冶金協会
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詳細情報 詳細情報について
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- CRID
- 1390001206310752640
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- NII論文ID
- 130004770800
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- NII書誌ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL書誌ID
- 025986649
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDLサーチ
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- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可