β-FeSi<SUB>2</SUB>の低温合成と焼結体の熱電特性

• 前野 裕樹

  国士舘大学大学院工学研究科電気工学専攻

• 宮本 正章

  国士舘大学工学部電気電子工学科

書誌事項

タイトル別名

• Low Temperature Synthesis and Thermoelectric Properties of β-FeSi<SUB>2</SUB>
• β-FeSi2の低温合成と焼結体の熱電特性
• ベータ FeSi2 ノ テイオン ゴウセイ ト ショウケツタイ ノ ネツデントクセイ
• Low Temperature Synthesis and Thermoelectric Properties of &beta;-FeSi<SUB>2</SUB>

抄録

β-FeSi₂ powders were prepared by solid-state reaction between iron and silicon powders. After the reaction, sintered n-type and p-type β-FeSi₂ were prepared by hot pressing at 900°C for 1h under 55MPa in Ar. The effects of the amount of KCl and the most suitable reaction temperature on the solid-state reaction were investigated. β-FeSi₂ powder was prepared by adding 5.0mass%KCl at 850°C for 5h in Ar. After the reaction, sample crushed by ball milling and KCl was removed by washing with pure water. But in hot pressed samples, small amount of ε-phase appeared. To reduce the ε-phase, excess 3.0mass%Si were added to the β-phase powders before hot pressing. The relative density of the obtained sintered body was about 92%.<BR>Thermoelectric properties of sintered body of β-phase only (Fe_0.95M_0.05Si_2.21, M=Co, Cr) and sintered body including ε-phase (Fe_0.95M_0.05Si_2.1, M=Co, Cr) were evaluated. As a result, power factor (α²/ρ) of sintered body including ε-phase was superiorer to sintered body of β-phase only.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 53 (6), 523-528, 2006

  一般社団法人 粉体粉末冶金協会

キーワード

• β-FeSi<SUB>2</SUB>
• ε-FeSi
• solid-state reaction
• hot press sintering
• thermoelectric properties

詳細情報

• CRID: 1390282681284179072
• NII論文ID: 130000057872
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.53.523
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 8025932
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8025932
• Web Site: https://www.jstage.jst.go.jp/article/jjspm/53/6/53_6_523/_pdf
• 本文言語コード: ja
• データソース種別:
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  • NDL
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  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可