Low-cost Fe-Si-B-Cu-Nb-Al-Ni nanocrystalline magnetic core preparation method for high-frequency electronic transformer

A fe-si-b-cu-nb-al-ni, electronic transformer technology, applied in the direction of inductance/transformer/magnet manufacturing, circuits, magnetic materials, etc., can solve the problems of unfavorable competition and high production costs, and reduce production The effect of low cost, low production cost and simple production process

Active Publication Date: 2014-04-02
TONGLING SANJIA TRANSFORMER
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Problems solved by technology

Among them, the FeCuNbSiB nanocrystalline magnetic core contains noble metal Nb, and the production cost

Method used

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Embodiment Construction

[0015] A preparation method of Fe-Si-B-Cu-Nb-Al-Ni low-cost nanocrystalline magnetic core for high-frequency electronic transformer, comprising the following steps:

[0016] (1) Vacuum isothermal annealing for 1.5h under the condition of temperature of 520℃ and vacuum degree of 0.0015Pa, and then air-cooled to room temperature to obtain nanocrystalline thin ribbons prepared by single-roller melt rotary fast quenching method. belt; wherein, the mass percentage of each component of the iron-based amorphous thin belt is: Fe 73.5%, Si 13.5%, B 9%, Cu 1%, Nb 1.5%, Al 1%, Ni 0.5%, and its bandwidth is 10mm, with a thickness of 15μm;

[0017] (2) crushing the prepared nanocrystalline thin ribbon to obtain nanocrystalline metal powder, and then dividing the nanocrystalline metal powder into A and B materials according to the weight ratio of 30% and 70%;

[0018] (3) Take material A, add 0.6% γ-(methacryloyloxy)propyl trimethoxyalane and 3% mica powder, mix at a high speed of 1500...

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Abstract

The invention discloses a low-cost Fe-Si-B-Cu-Nb-Al-Ni nanocrystalline magnetic core preparation method for a high-frequency electronic transformer. The method specifically comprises the following steps of performing vacuum isothermal annealing on an iron-based amorphous thin strip to obtain a nanocrystalline thin strip; crushing the obtained nanocrystalline thin strip to obtain nanocrystalline metal powder; classifying the nanocrystalline metal powder into unequal parts of materials A and B; adding gamma-(methacryloxypropyl) trimethoxy aluminoxane and mica powder into the material A for treatment, and treating the material B sequentially by using triethanolamine, aluminum nitride, hexamethylenetetramine and polyvinyl alcohol; uniformly mixing the treated materials A and B, adding a sodium aluminate aqueous solution, performing compression molding, coating the surface of a molded magnetic core with magnetic core glue G500, and performing curing to obtain a finished product. According to the method, Nb is added into the magnetic core, so that the saturation magnetic induction intensity of the magnetic core is favorably improved; Al is added, so that the coercive force is favorably reduced; in addition, the production cost of a FeSiBCuNb magnetic core can be remarkably lowered.

Description

technical field [0001] The invention relates to a preparation method of a Fe-Si-B-Cu-Nb-Al-Ni low-cost nanocrystalline magnetic core for a high-frequency electronic transformer, and belongs to the technical field of magnetic materials. Background technique [0002] Iron-based nanocrystalline soft magnetic materials have high saturation magnetic induction, high permeability, low coercivity and low high-frequency loss, good hardness, wear resistance and corrosion resistance, good temperature and environmental stability, and their comprehensive The magnetic properties are far superior to those of aluminum steel, ferrite, permalloy and amorphous alloy. Among them, FeCuNbSiB nanocrystalline magnetic core contains precious metal Nb, and its production cost is high, which is not conducive to competition with soft magnetic materials such as aluminum steel. SUMMARY OF THE INVENTION [0003] In order to solve the above-mentioned technical problems, the purpose of the present invent...

Claims

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Application Information

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IPC IPC(8): H01F41/02H01F1/147B22F3/02
Inventor 李新满
Owner TONGLING SANJIA TRANSFORMER
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