ゾルゲル法による（Ｂａ，Ｓｒ）ＴｉＯ３ナノ結晶含有複合粉末の合成とキャラクタリゼーション

• 井阪 延之

  北海道大学大学院 工学研究科

• 伊藤 英信

  北見工業大学

• 高橋 順一

  北海道大学大学院 工学研究科

書誌事項

タイトル別名

• Synthesis and Characterization of Composite Powders Containing (Ba, Sr) TiO3 Nano Crystals by Sol-Gel Method
• ゾルゲルホウ ニ ヨル Ba Sr TiO3ナノ ケッショウ ガンユウ フクゴウ フンマツ ノ ゴウセイ ト キャラクタリゼーション

抄録

Composite gel powders with a basic composition of 0.65 (Ba_0.7Sr_0.3) TiO₃ - 0.27 SiO₂ - 0.08 Al₂O₃ were prepared by a sol-gel method in different solvent systems. In the alcohol solvent system, the difference in gelation time caused little change in the crystallization behavior in which the perovskite phase was formed at 800℃ from the gel, but a substantial change in the sintering behavior of the calcined composite powders. The TPD-MASS analysis showed that the densification of the green compacts could be closely related to CO₂ gas release from the calcined powders at 700∼800℃. In the case of the acetic acid solvent system, on the other hand, the composite powders prepared were characterized by a different crystallization behavior in which the fresnoite phase was metastably produced at 700℃ and by the relatively large specific surface area of the calcined powders. They also revealed that an increase in the Al₂O₃ ratio in the glass composition (0.27 SiO₂ - 0.08 Al₂O₃) resulted in an increased ratio of the perovskite BST phase after sintering, leading to an enhanced dielectric permittivity of the fabricated glass-ceramic.

収録刊行物

• 粉体工学会誌

  粉体工学会誌 47 (3), 148-157, 2010

  一般社団法人 粉体工学会

キーワード

• Sol-gel method
• Composite powder
• Glass-ceramic
• Crystallization
• Sintering characteristic

詳細情報

• CRID: 1390282679488214912
• NII論文ID: 10026354118
• NII書誌ID: AN00222757
• DOI: 10.4164/sptj.47.148
• ISSN: 18837239
• ISSN: 03866157
• NDL書誌ID: 10612368
• Web Site: http://id.ndl.go.jp/bib/10612368
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10612368
• 本文言語コード: ja
• データソース種別:
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