書誌事項
- タイトル別名
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- Synthesis of Ca3Co4O9 Powders by Ultrasonic Spray Pyrolysis Method and the Electrical Properties of the Sintered Bodies
- チョウオンパ フンム ネツ ブンカイホウ オ モチイタ Ca3Co4O9 フンマツ ノ ゴウセイ ト ソノ ショウケツタイ ノ デンキテキ セイシツ
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Ca3Co4O9 was synthesized by ultrasonic spray pyrolysis (USP) method. The concentration of metal ions in the starting solution was 0.1 mol/l or 0.01 mol/l as Ca3Co4O9, and as the solvent, each of pure water, H2O2 solution or HNO3 solution was used. The solution was sprayed in the furnace and pyrolyzed at 1073 K. X-ray powder diffraction analysis confirmed that all the powders prepared by USP were Ca-Co oxide. The powders were calcined at 1073 K and then sintered at 1173 K. The same sintering conditions were used for the powders prepared by the solid state reaction. The density of the sintered bodies prepared from USP powders ranged in 2.5-2.8gcm-3 and they differed by the solvent of the starting solution. The density of the sintered bodies prepared by solid state reaction was higher than those by USP. The electrical conductivity of the sintered bodies prepared by USP ranged in 4700-5000 Sm-1 at 1073 K, which was higher than those by solid state reaction. In contrast, Seebeck coefficient of the bodies prepared by USP was 106-108μVK-1 at 1073 K, being smaller than those by solid state reaction.
収録刊行物
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- 粉体および粉末冶金
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粉体および粉末冶金 50 (6), 480-484, 2003
一般社団法人 粉体粉末冶金協会
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詳細情報 詳細情報について
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- CRID
- 1390282681286053376
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- NII論文ID
- 10011242350
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- NII書誌ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL書誌ID
- 6625073
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 使用不可