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Iron nanocrystalline alloys consist of iron, silicon, boron, niobium and cuprum. The iron-based amorphous alloy containing Cu and Nb will form very fine grain structure when it is annealed above the crystallization temperature. The grain size is only 10-20 nanometers, and this amorphous alloy can form crystalline materials by special crystallization annealing which are called nanocrystalline alloys. Nanocrystalline materials have the excellent properties of high saturation magnetic induction intensity, high permeability, low coercivity, low loss and good stability, high toughness,wear and corrosion resistance, etc. Because the nanocrystalline materials has optimum performance and price in metal soft magnetic materials, it can replace silicon steel, premalloy and ferrites to be the ideal materials for middle and high frequency transformer, mutual inductor, inductance component.
The amorphous C-type alloy core has the advantages of simple structure, convenient coil assembly, convenient inductance adjustment, etc., The amorphous C-type alloy cores has high magnetic permeability and low iron loss characteristics in the frequency range of 5KHz-20KHz, is widely used as the filter inductor in the inverter circuit of the solar photovoltaic industry.