用宽20 mm、厚25μm的Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9非晶带材绕制成环形磁芯,再经550℃×100 min晶化退火处理制成非晶/纳米晶磁芯。研究了环氧树脂封装和测试温度对其软磁性能的影响。结果表明,与环氧树脂封装前相比,封装后的起始磁导率、最大磁导率、饱和磁感应强度和电感减小;矫顽力、磁滞损耗和剩磁增大;磁化曲线和磁滞回线基本上重合。随测试温度的升高,环氧树脂封装前后的起始磁导率和电感均呈先增大后减小的趋势;饱和磁感应强度均减小;矫顽力均增大。 A toroidal core was made by winding a Fe_ (73.5) Cu_1Nb_3Si_ (13.5) B_9 amorphous ribbon with a width of 20 mm and a thickness of 25 μm, and then was annealed at 550 ℃ for 100 min to form an amorphous / nanocrystalline magnetic core. The effect of epoxy package and test temperature on its soft magnetic properties was investigated. The results show that the initial permeability, the maximum permeability, the saturation magnetic induction and the inductance decrease after encapsulation compared with that before the epoxy resin. The coercive force, hysteresis loss and remanence increase. The magnetization curves and Hysteresis loop basically coincide. With the increase of the test temperature, the initial permeability and inductance of the epoxy resin before and after the encapsulation increase first and then decrease; the saturation magnetic flux density decreases and the coercive force increases.