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Fe-based amorphous soft magnetic alloy having excellent soft magnetic properties, such as high permeability, resistivity, and low magnetic loss, the coercive force is small, small magnetostriction. The thermodynamic metastable structure since the amorphous belongs, however, in certain conditions, the crystallization occurs, thereby affecting the soft magnetic properties of the material. The corresponding solutions is controlled crystallization process, to get the organization to improve the stability of the nanocrystals, while the soft magnetic properties are not obvious deterioration. The amorphous foil existing EBPVD equipment improvements. A substrate cooling system in order to avoid the deposition of the process occurred amorphous - crystallization phase transition, the process of the preparation of amorphous FeSi foil final. Prepared state amorphous alloy microstructure and electromagnetic properties subsequent crystallization heat treatment, the alloy microstructure and electromagnetic properties of the study the crystallization process parameters and crystallization treatment; then preparation state amorphous FeSi alloy . The results show that the alloys were prepared were amorphous structure, mainly containing Fe and Si, two elements, and the silicon content is very low, about 0.197%. The Inoue ingredients qualification recognized based on the field of bulk amorphous, impossible to get this the simple Bipropellant amorphous. The reason for breaking this component defined conditions, that using the process with a high cooling rate. XRF, XRD, AFM, PPMS VSM variety of testing methods, the composition of the alloy in the the preparation state amorphous alloy crystallization process, organizational structure, morphology and electromagnetic properties characterize the resistance of the alloy is ρ = 5.68 × 10-4? mm, its value is greater than the resistivity of the silicon steel sheets (4.4 × 10-4? mm). Preparation of alloys with high initial permeability (13,000) and high saturation magnetic flux density (2.1T), this saturation magnetic flux density is close to electrical pure iron. The crystallization process parameters significantly affect the alloy microstructure and electromagnetic properties. With the elevated temperature of the crystallization heat treatment, the alloy amorphous component reduced, increase in the crystalline component originally present in the alloy particles begin to differentiate, and the formation of many small particles of nanometer sizes. Crystallization heat treatment temperature increases, crystal phase increases monotonically decreases the resistivity of the alloy, but the magnetic no significant change. Applying an external magnetic field, when the crystallization heat treatment, and found that the microstructure of the alloy structure and the resistivity variation was no significant difference, but can lead to increase in the degree of the anisotropy of magnetic energy, along the direction of the magnetic field on the soft magnetic properties superior to the perpendicular to the field direction.
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