FeSi-Fe<SUB>2</SUB>Si<SUB>5</SUB>共晶合金の焼結体から生成されるFeSi<SUB>2</SUB>について

• 小島 勉

  育英工業高等専門学校電気工学科

• 増本 剛

  金属材料技術研究所

• 西田 勲夫

  金属材料技術研究所

書誌事項

タイトル別名

• Formation of FeSi<SUB>2</SUB> from Sintered FeSi-Fe<SUB>2</SUB>Si<SUB>5</SUB> Eutectic Alloy
• FeSi-Fe2Si5共晶合金の焼結体から生成されるFeSi2について
• FeSi Fe2Si5キョウショウ ゴウキン ノ ショウケツタイ カラ セイセ

抄録

The phase transformation from a sintered eutectic alloy consisting of ε-FeSi and α-Fe₂Si₅ to β-FeSi₂ has been studied by metallographic observations, by X-ray quantitative analysis techniques, and by measuring the resistivity and thermoelectric power corresponding to various annealing temperatures and times. It is found that the resistivity increases with increasing amount of β-FeSi₂ and two maximum values occur at 1123 and 1133 K in the relationship between the resistivity and the annealing temperature. A drastic decrease in the resistivity can be also confirmed in the temperature range from 1123 to 1133 K. Two different reactions separately occur in the regions below 1123 and above 1133 K. Below 1123 K β-FeSi₂ is formed mainly by the decomposition reaction, α→β+Si, and followed by the subsidiary reaction, Si+ε→β; above 1133 K β-FeSi₂ is produced by the peritectoid reaction, ε+α→β. In the former reaction, the complete β-FeSi₂ is obtained by an effective annealing at 1113 K for 3.6×10⁴ s.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 48 (8), 843-847, 1984

  公益社団法人 日本金属学会

キーワード

• iron silicides
• eutectic alloy
• annealing
• semiconductor
• thermoelectric power
• resistivity
• peritectoid reaction
• discontinuous temperature

詳細情報

• CRID: 1390282681462590080
• NII論文ID: 130007339803
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.48.8_843
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 2997553
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I2997553
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/48/8/48_8_843/_pdf
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