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

机译：高磁场对Fe-Ga体系固液反应的影响

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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 Fe_(3)Ga + eutectic region at 0 and 10 T were 2.50 × 10~(4) m~(2)/s and 1.32 × 10~(3) m~(2)/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.
机译：使用Fe / Ga扩散偶研究了磁场对Fe-Ga二元体系中固液反应的影响。对于0和10 T，反应和相的生长均通过扩散控制过程进行。发现，无论i-Fe是铁磁态还是铁磁性，金属间相的生长都受到10 T磁场的抑制。顺磁状态。 Fe_（3）Ga +共晶区在0和10 T时的抛物线系数的指数前因子分别为2.50×10〜（4）m〜（2）/ s和1.32×10〜（3）m〜（ 2）/ s。同时，在0和10 T时的活化能分别为336 kJ / mol和318 kJ / mol，这表明磁场无效。即，抛物线系数的预指数因子的减小导致Fe / Ga中的磁场诱导的反应的抑制。

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