ＴｉＯ２（Ｔｉ）粉添加（Ｂａ，Ｓｒ）ＴｉＯ３真空焼結体のＰＴＣＲ特性に及ぼす焼結およびペースト焼き付け条件の影響

• 金 濬圭

  東京大学生産技術研究所

• 林 宏爾

  東京大学生産技術研究所

書誌事項

タイトル別名

• Effects of Sintering and Paste-Baking Conditions on PTCR Characteristic of (Ba,Sr)TiO3 Vacuum-Sintered Compact Added with TiO2(Ti) powder.
• TiO2 Ti コナ テンカ Ba Sr Ti03 シンクウ ショウケツタイ ノ PTCR トクセイ ニ オヨボス ショウケツ オヨビ ペースト ヤキツケ ジョウケン ノ エイキョウ

抄録

The effects of sintering temperature (T_s; 1573-1748K) and time (t_s; 0.6-14.4ks) and paste-baking-temperature or heating temperature (T_b or T_h; 673-1273K; t_b is 0.3ks) on PTCR characteristic were investigated for (Ba, Sr)Ti0₃ vacuum-sintered compact added with 3.9mass% TiO₂(Ti) powder of 12.5mass% TiO₂.<BR>The results obtained were as follows; (1)PTCR characteristic developed at all T_S (t_s=3.6ks, T_b=853K). The electrical resistivity at room temperature (ρ_rt) showed a minimum value of 1.8x 10²Ω⋅cm and the ρ_max/ρ_rt showed a maximum value of about 10⁶ at 1723K. (2)For all t_s(T_s=1623K, T_b=853K), PTCR characteristic developed. The ρ_rt showed a minimum value of 2.6x 10³Ω.cm at 7.2ks. (3) At T_b above 823K (T_s=1623K, t_s=3.6ks), PTCR characteristic developed. The ρ_rt showed a minimum value of 1.0x l0³Ω⋅cm. (4)The ρ-T curve of (Ba, Sr)Ti0₃+TiO₂(Ti) vacuum-sintered compact was affected more largely by T_S, t_s and T_b than that of (Ba, Sr)Ti0₃ air-sintered compact. This was considered to be mainly due to the porous and fine grained microstructure in the former compact.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 46 (4), 364-370, 1999

  一般社団法人 粉体粉末冶金協会

キーワード

• PTCR
• BaTiO<SUB>3</SUB>
• thermistor
• paste-baking
• specific resistivity
• dielectric constant
• vacuum sintering
• titanium

詳細情報

• CRID: 1390282681286024960
• NII論文ID: 10002262260
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.46.364
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 4701503
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4701503
• 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