書誌事項
- タイトル別名
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- Sinterability of SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> Powders Prepared by Spray Pyrolysis
- フンム ネツ ブンカイ ニ ヨリ ゴウセイシタ シリカ アルミナ フンマツ ノ
- Effect of Chemical Composition
- 化学組成の影響
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The SiO2-Al2O3 powders containing 68 to 78wt% Al2O3 were synthesized by spray pyrolysis technique to study their sinterability at 1630°-1650°C. The prepared amorphous powders were transformed directly to crystalline mullite by calcination above 980°C. When heat-treated at temperatures above 1500°C, corundum was detected in the powder composed of 78wt% Al2O3. Densification of the silica-rich powder was accelerated by the formation of glassy phase, and the bulk density of alumina-rich powder also increased with the increase of alumina content. While, in the 3Al2O3⋅2SiO2 region, poor densification was observed. The shape of mullite grain in the sintered body changed from needle-like to roundish in compliance with the increase in alumina content, and corundum particles were observed along the grain-boundary in the sintered specimen of 78wt% Al2O3 content. Glassy phase which consists merely of silicon and oxygen was observed along the grain-boundaries of the 70wt% Al2O3 sintered body.
収録刊行物
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- 窯業協會誌
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窯業協會誌 94 (1089), 485-490, 1986
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390282680224961664
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- NII論文ID
- 110002313463
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- NII書誌ID
- AN00245650
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- ISSN
- 18842127
- 00090255
- http://id.crossref.org/issn/00090255
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- NDL書誌ID
- 3081515
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可