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タイトル: Uniformly porous MgTi2O5 with narrow pore-size distribution: in situ processing, microstructure and thermal expansion behavior
著者: SUZUKI, Yoshikazu
MORIMOTO, Masafumi
著者名の別形: 鈴木, 義和
キーワード: MgTi2O5
Pseudobrookite
Karrooite
Pore-size distribution
In-situ process
High-temperature XRD
Thermal expansion
発行日: 1-Dec-2010
出版者: The Ceramic Society of Japan
誌名: Journal of the Ceramic Society of Japan
巻: 118
号: 12
開始ページ: 1212
終了ページ: 1216
抄録: Porous ceramics based on refractory double oxides are promising for light-weight structural components and high-temperature filter materials. In this study, porous MgTi2O5 ceramics with pseudobrookite-type structure have been prepared by in situ processing (viz. reactive sintering). High-temperature XRD revealed the in situ reaction behavior of the mixed powder, and indicated suitable sintering temperatures to obtain single phase MgTi2O5 (²1000°C). Uniformly porous MgTi2O5 ceramics with very narrow pore-size distribution at the diameter of ³1 μm were obtained by the pyrolytic reactive sintering at 10001200° C, where decomposed CO2 gas from a carbonate source acted as an intrinsic pore forming agent. Thermal expansion behavior of bulk porous MgTi2O5 (porosity: 42%) is also discussed.
著作権等: ©2010 The Ceramic Society of Japan.
URI: http://hdl.handle.net/2433/141923
DOI(出版社版): 10.2109/jcersj2.118.1212
出現コレクション:学術雑誌掲載論文等

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