(上海大学 上海市现代冶金与材料制备重点实验室，上海 200072)
摘 要: 为强化电迁移技术的效果， 在金属液两端施加恒定电场的同时施加了一个与电流方向平行的稳衡磁场， 考察了在磁场作用下BiMn合金中MnBi相的电迁移情况。 实验结果表明， 在磁场的作用下， MnBi相可以在10 A/cm2的电流密度下向阴极发生迁移；当施加的电流密度一定时， MnBi相的偏移率随着磁感应强度的增大而增大， 且存在一个临界值； 当磁感应强度一定时，只有当电流密度达到一定的值时才能使析出相稳定迁移。
关键字: Bi-Mn合金； 磁场； 电场； 相颗粒； 电迁移
（Shanghai Enhanced Laboratory of Modern Metallurgy and
Material Processing, Shanghai University, Shanghai 20072, China）
Abstract: To improve the effect of electrotransport technique, a parallel magnetic field was applied to the electro-transport system, and the migration of MnBi phase in BiMn alloy was investigated. The results show that under the influence of magnetic field, MnBi phase can migrate toward to the cathode with only 10 A/cm2 current density; the ratio of migrated MnBi phase increases with increasing magnetic flux density, and there is a critical value, under which the ratio of MnBi phase excursion would increase remarkably; fixing the magnetic flux density, the precipitated phase can migrate steadily when current density is above a critical value.
Key words: Bi-Mn alloy; magnetic field; electric field; phase particle; electrotransport
