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利用直流高压电场处理法,成功使非晶薄带Fe73.5Cu1Nb3Si13.5B9在低于其初始晶化温度140℃以下纳米晶化,析出大小为2～10nm的α Fe(Si)晶粒.该方法避免了传统的退火法在晶化温度以上晶粒长大这一缺点,成功制备出晶粒极细小的纳米材料.延长处理时间,晶粒数明显增多,晶化效果好.随着非晶晶化量的增加,显微硬度随之增大.同时经过直流高压电场处理的非晶Fe73.5Cu1Nb3Si13.5B9试样晶化后其饱和磁化强度增大,表现出不同的磁性特征.
The α Fe (Si) grains with the size of 2 ~ 10 nm were successfully precipitated by nanocrystallization of amorphous Fe73.5Cu1Nb3Si13.5B9 under the initial crystallization temperature of 140 ℃ by DC high voltage electric field treatment. Avoid the traditional annealing method in the crystal growth temperature above the crystallization of the shortcomings of the successful preparation of very fine grain nano-materials.Extended treatment time, the number of grains increased significantly, with good crystallization.With the amorphous The amount of magnetization increases and the microhardness increases.At the same time, the saturation magnetization of amorphous Fe73.5Cu1Nb3Si13.5B9 samples after DC high voltage electric field treatment increases, showing different magnetic characteristics.