Fe-based amorphous alloys are composed of 8%Fe and 2% Si and B metal elements, and have high saturation magnetic induction intensity (1.54T). Compared with silicon steel, Fe-based amorphous alloys are superior to silicon steel in terms of loss, permeability, exciting current and iron loss, especially iron. The thickness of Fe-based amorphous alloy strip is about .3mm, which is widely used in distribution transformers, high-power switching power supplies, pulse transformers, magnetic amplifiers, intermediate frequency transformers and inverter cores. Suitable for frequencies below 1kHz
(2) Fe-Ni based-amorphous alloy
Fe-Fe-Nibased-amorphousalloy)
(4) iron-based nanocrystalline alloy
iron-based nanocrystalline alloy is an amorphous material formed by rapid solidification process, which is mainly composed of iron and a small amount of Nb, Cu, Si and B. After heat treatment, this amorphous material can obtain microcrystals with a diameter of 1-2 nm, which are dispersed on the amorphous matrix and are called microcrystals and nanocrystals. Nanocrystalline materials have excellent comprehensive magnetic properties: high saturation magnetic induction (1.2T), high initial magnetic permeability (8×14), low Hc(.32A/M), low high frequency loss under high magnetic induction (P.5t/2kHz = 3w/kg), and resistivity of 8μ ω/cm, which is higher than that of Permalloy (5-6μ ω). It is the material with the best comprehensive performance on the market at present; Applicable frequency range: 5Hz-1kHz, and optimal frequency range: 2kHz-5kHz. Widely used in high-power switching power supply, inverter power supply, magnetic amplifier, high-frequency transformer, high-frequency converter, high-frequency choke core, current transformer core, leakage protection switch and * * * mode inductance core.
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