Abstract
Fe-based nanocrystalline soft-magnetic alloy presents the advantages of high permeability and low hysteresis loss and is widely used in the power electronics industry due to its excellent soft-magnetic properties. The effects of microwave annealing on the crystallization process and properties of Fe80.5Si10B8Cu1Nb0.5 amorphous alloy have been studied by differential scanning calorimetry, x-ray diffraction analysis, and vibrating-sample magnetometry. The crystallization process of Fe80.5Si10B8Cu1Nb0.5 amorphous alloy consists of two stages: α-Fe(Si) phase and Fe2B phase. The microwave annealing process enables a significant improvement in the soft-magnetic properties of Fe-based amorphous alloy, with the optimum magnetic properties being obtained for the alloys annealed at 1000 W for 10 min.
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