2007年12月
Sol-gel synthesis of macroporous YAG from ionic precursors via phase separation route
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
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- 巻
- 115
- 号
- 1348
- 開始ページ
- 925
- 終了ページ
- 928
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.2109/jcersj2.115.925
- 出版者・発行元
- CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI
Yttrium aluminum garnet, Y3Al5O12, (YAG) monoliths with well-defined macropores have been prepared from ionic precursors using the sol-gel method accompanied by phase separation. The addition of propylene oxide to the starting solution controls the gelation, while the addition of poly(ethylene oxide) induces the phase separation. Polymerization-induced phase separation and gelation concur by an appropriate selection of the starting composition, which allows the production of bicontinuous macroporous nanocomposite gels in large dimensions (similar to 10 x 10 x 10 mm(3)). During heat treatment at 800 degrees C, the monolithic nanocomposite gels crystallize into YAG without the formation of any intermediate phases or the precipitation of impurity phases, indicating higher homogeneity of cation distribution in the dried gels. The macroporous YAG network was maintained even after heat treatment at 1000 degrees C for 10 h.
- リンク情報
- ID情報
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- DOI : 10.2109/jcersj2.115.925
- ISSN : 1882-0743
- eISSN : 1348-6535
- Web of Science ID : WOS:000251952800026