溶液プロセスを利用した熱電酸化物多結晶焼結体の微細構造制御と高性能化プロセスの開発

• 井藤 幹夫

  大阪大学大学院工学研究科附属原子分子イオン制御理工学センター

• 柳楽 知也

  大阪大学大学院工学研究科知能・機能創成工学専攻

• 勝山 茂

  大阪大学大学院工学研究科マテリアル生産科学専攻

書誌事項

タイトル別名

• Microstructural Control and Development of Synthesis Route for Enhancing Performance of Sintered Thermoelectric Oxide Polycrystals via Chemical Solution Process
• 受賞記念講演 平成20年度研究進歩賞 溶液プロセスを利用した熱電酸化物多結晶焼結体の微細構造制御と高性能化プロセスの開発
• ジュショウ キネン コウエン ヘイセイ 20ネンド ケンキュウ シンポショウ ヨウエキ プロセス オ リヨウ シタ ネツデン サンカブツ タケッショウ ショウケツタイ ノ ビサイ コウゾウ セイギョ ト コウセイノウカ プロセス ノ カイハツ

抄録

The thermoelectric oxides, such as a p-type Na_xCo₂O₄ and an n-type SrTiO₃ etc., have been synthesized by the chemical solution process. The polymerized complex (PC) process efficiently develops compositional homogeneity of sintered polycrystals and promotes substitution of a doping element. In the case of Na_xCo₂O₄ with a layered crystal structure, a plate-like powder precursor can be synthesized by the citric acid complex process, providing a sintered polycrystal with c-axis oriented crystallographic anisotropy. The establishment of rapid synthesis process at a low temperature of the n-type SrTiO₃ system was tried by using the PC process and the pulsed current heating (PCH) method. TiB₂ addition was found to be quite effective not only for reduction in the electrical resistivity, but also for rapid densification during the sintering. As a result, it was clarified that the synthesis route via the PC process, the PCH method and TiB₂ addition is quite promising as a rapid synthesis process at a low temperature of the SrTiO₃ system. Based on the experimental results obtained in this study, the chemical solution process is considered to be a quite effective methodology for enhancing performances of structural and functional oxides and for developing the synthesis process under soft conditions.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 57 (4), 224-231, 2010

  一般社団法人 粉体粉末冶金協会

キーワード

• polymerized complex process
• citric acid complex process
• oxide powder
• sintered polycrystal
• thermoelectric properties

詳細情報

• CRID: 1390001206306946688
• NII論文ID: 10026346545
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.57.224
• COI: 1:CAS:528:DC%2BC3cXlsl2gs7g%3D
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 10673996
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10673996
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可