High magnetic field effects on the solid-liquid reaction of Fe-Ga system

Yoshifuru Mitsui, Toshiaki Hagio, Kohki Takahashi, Keiichi Koyama

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)807-811
Number of pages5
JournalIsij International
Volume60
Issue number4
DOIs
Publication statusPublished - 2020

Keywords

  • Fe-Ga
  • Liquid-solid reaction
  • Magnetic fields

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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