ＴｉＯ?S２?T焼結体の電気伝導におよぼすＡｌ?S２?TＯ?S３?TおよびＮｂ?S２?TＯ?S５?Tの添加効果

• 高田 雅介

  東京大学工学部工業化学科

• 木島 衛

  東京大学工学部工業化学科

• 杉山 達夫

  東京大学工学部工業化学科

• 柳田 博明

  東京大学工学部工業化学科

書誌事項

タイトル別名

• Doping Effects of Al₂O₃ or Nb₂O₅ on the Electrical Conductivity of TiO₂ Sintered Bodies
• TiO2 ショウケツタイ ノ デンキ デンドウ ニ オヨボス Al2O3 オヨ

抄録

The electrical resistivity of sintered bodies of TiO₂ doped with Al₂O₃ or Nb₂O₅ was measured in air in the range from 30° to 1000°C.<br>The resistivity of Nb-doped specimen sintered in air showed extrema (a minimum at ≈ 270°C and a maximum at ≈ 440°C) but not on Al-doped specimen. This suggests that the extent of chemisorption of oxygen is different with dopant.<br>The atmosphere for sintering had a remarkable effect on the resistivity of the specimen; more significant effect of solid solution of Nb₂O₅ on the resistivity was observed in the specimen sintered in Ar than in air.<br>When the resistivity of Nb-doped specimen sintered in Ar was measured in air during heating, two step extrema was observed. The first extrema in the low temperature was explained in terms of the desorption of the chemisor bed oxygen and the oxidation (Ti_i^...→Ti_Ti^×or V₀^..→O₀^×), and the second extrema in the high temperature was by the precipitation of Nb₂O₅.

収録刊行物

• 窯業協會誌

  窯業協會誌 84 (969), 237-241, 1976

  公益社団法人 日本セラミックス協会

詳細情報

• CRID: 1390001205215270272
• NII論文ID: 110002315604
• NII書誌ID: AN00245650
• DOI: 10.2109/jcersj1950.84.969_237
• ISSN: 18842127
• ISSN: 00090255
• NDL書誌ID: 1713214
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I1713214
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1950/84/969/84_969_237/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可