Influence of addition of AlF3 on thermal decomposition of gibbsite and phase transition of the intermediate alumina to α-Al2O3
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- SHIMBO Mitsuo
- Center for Geo-Environmental Science, Faculty of Engineering and Resource Science, Akita University
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- YAMAMOTO Osamu
- Center for Geo-Environmental Science, Faculty of Engineering and Resource Science, Akita University
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- HAYASHI Shigeo
- Center for Geo-Environmental Science, Faculty of Engineering and Resource Science, Akita University
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- NAKAGAWA Zenbe-e
- Center for Geo-Environmental Science, Faculty of Engineering and Resource Science, Akita University
書誌事項
- タイトル別名
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- Influence of Addition of AlF3 on Thermal Decomposition of Gibbsite and Phase Transition of the Intermediate Alumina to .ALPHA.-Al2O3
- Influence of addition of AlF3 on thermal decomposition of gibbsite and phase transition of the intermediate alumina to a Al2O3
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説明
The addition of aluminum fluoride to gibbsite retarded the phase change to boehmite by chemisorption of hydrogen fluoride on gibbsite particles. In the specimen with addition of aluminum fluoride, the spinel type phase transformed directly to α-Al2O3, without passing through κ- and θ-Al2O3 phases. The formed α-Al2O3 consisted of clear, hexagonal plate-like particles about 1 μm, Without taking over a relic of the gibbsite particle. The formation of automorphic crystals suggests that a surface diffusion also contributes to the mechanism of this material transport in addition to the vapor phase transport.<br>
収録刊行物
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 115 (1345), 536-540, 2007
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
- 1390001205282603136
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- NII論文ID
- 110006380227
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- NII書誌ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL書誌ID
- 8885625
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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
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可