High Magnetic Field Effects on the Solid-liquid Reaction of Fe–Ga System

• Mitsui Yoshifuru

  Graduate School of Science and Engineering, Kagoshima University

• Hagio Toshiaki

  Graduate School of Science and Engineering, Kagoshima University

• Takahashi Kohki

  Institute for Materials Research, Tohoku University

• Koyama Keiichi

  Graduate School of Science and Engineering, Kagoshima University

抄録

The effect of magnetic fields on solid-liquid reactions in the Fe–Ga binary system was investigated using Fe/Ga diffusion couples. The reaction and phase growth proceeded by diffusion-controlled process for both 0 and 10 T. It is found that the growth of the intermetallic phases was suppressed by magnetic fields of 10 T regardless of whether α-Fe was in a ferromagnetic or paramagnetic state. The pre-exponential factors in the parabolic coefficient of the Fe₃Ga + eutectic region at 0 and 10 T were 2.50 × 10⁴ m²/s and 1.32 × 10³ m²/s, respectively. Meanwhile, activation energies at 0 and 10 T were 336 kJ/mol and 318 kJ/mol, respectively, which indicated the ineffectiveness of magnetic fields. That is, reduction of pre-exponential factor of the parabolic coefficient leads the magnetic-field-induced suppression of the reaction in Fe/Ga.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 60 (4), 807-811, 2020-04-15

  一般社団法人 日本鉄鋼協会

キーワード

• Fe–Ga
• magnetic fields
• liquid-solid reaction

詳細情報

• CRID: 1390285300151560704
• NII論文ID: 130007832948
• DOI: 10.2355/isijinternational.isijint-2019-470
• ISSN: 13475460
• ISSN: 09151559
• Web Site: https://www.jstage.jst.go.jp/article/isijinternational/60/4/60_ISIJINT-2019-470/_pdf
• 本文言語コード: en
• データソース種別:
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