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Soft magnetic material and preparation method thereof

A soft magnetic material, soft tape technology, applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve the problems of easy breakage and poor toughness

Active Publication Date: 2020-10-23
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned deficiencies existing in the prior art, the object of the present invention is to provide a kind of soft magnetic material and preparation method thereof, the soft magnetic material preparation method provided by the present invention solves the problem of poor toughness of strip material after annealing, and is easy to be broken and fractured, and at the same time Further reduce eddy current loss

Method used

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  • Soft magnetic material and preparation method thereof
  • Soft magnetic material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment prepares the soft magnetic material according to the following method:

[0057] 1) Coat one side of the iron-based nanocrystalline raw tape with high-temperature resistant silicone resin (organic silicon liquid resin, high temperature resistance above 580 degrees Celsius, easy to cure). The coating thickness is 3 μm, and a layer of resin film is formed on the surface of the nanocrystal after curing.

[0058] 2) Rolling: the above-mentioned nanocrystalline strips are wound into 1.5kg / small rolls.

[0059] 3) Heat treatment: annealing is performed on the coiled nanocrystalline strip, the annealing temperature is 545° C., the holding time is 100 minutes, and the total heating and cooling time is 10 hours.

[0060] 4) Single-layer bonding: a layer of 3 μm double-sided adhesive is attached to the resin-free film surface of the nanocrystalline strip.

[0061] The structure of the nanocrystalline ribbon material obtained after the monolayer lamination obtaine...

Embodiment 2

[0069] This embodiment prepares the soft magnetic material according to the following method:

[0070] 1) Coat high-temperature-resistant silicone resin (organic silicon liquid resin, high temperature resistance above 580 degrees Celsius, easy to cure) on the iron-based nanocrystalline raw tape. The coating thickness is 5 μm, and a layer of resin film is formed on the surface of the nanocrystal after curing.

[0071] 2) Rolling: the above-mentioned nanocrystalline strips are wound into 1.5kg / small rolls.

[0072] 3) Heat treatment: annealing the above coiled nanocrystalline strips, the annealing temperature is 545°C, the holding time is 100min, and the total heating and cooling time is 10h.

[0073] 4) Single-layer bonding: a layer of 3 μm double-sided adhesive is attached to the resin-free film surface of the nanocrystalline strip.

[0074] 5) Breaking: The above-mentioned single-layer laminated amorphous / nanocrystalline strips are broken, so that the nanocrystals are evenl...

Embodiment 3

[0080] This embodiment prepares the soft magnetic material according to the following method:

[0081] 1) The iron-based nanocrystalline raw tape is coated with high-temperature resistant silicone resin (organic silicon liquid resin, high temperature resistance above 580 degrees Celsius, easy to cure). The coating thickness is 3 μm, and a layer of resin film is formed on the surface of the nanocrystal after curing.

[0082] 2) Rolling: the above-mentioned nanocrystalline strips are wound into 1.5kg / small rolls.

[0083] 3) Heat treatment: annealing the above coiled nanocrystalline strips, the annealing temperature is 545°C, the holding time is 100min, and the total heating and cooling time is 10h.

[0084] 4) Single-layer bonding: a layer of 5 μm double-sided adhesive is attached to the resin-free film surface of the nanocrystalline strip.

[0085] 5) Breaking: The above-mentioned single-layer laminated amorphous / nanocrystalline strips are broken, so that the nanocrystals ar...

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Abstract

The invention provides a soft magnetic material and a preparation method thereof. The method comprises the following steps: 1) coating one face of a soft magnetic material original belt with a protective material, and curing to obtain a soft magnetic material original belt containing the protective material on the surface; 2) carrying out heat treatment on the soft magnetic material original beltcontaining the protective material on the surface to obtain a soft magnetic belt material; (3) arranging insulating glue on the face, not coated with the protective material, of the soft magnetic belt, and crushing to obtain a crushed soft magnetic belt; and 4) laminating the crushed soft magnetic belt into a required number of layers, and coating with a film to obtain the soft magnetic material.According to the preparation method of the soft magnetic material, a heat treatment method is carried out after surface treatment, so that the toughness of the soft magnetic material can be effectively improved, and the problems that the soft magnetic belt is easy to break and crush in the laminating process after heat treatment and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and relates to a soft magnetic material and a preparation method thereof. Background technique [0002] Iron-based nanocrystalline alloy is an amorphous material formed by a rapid solidification process of an alloy composed of iron as the main element and a small amount of Nb, Cu, Si, and B elements. After heat treatment, the amorphous material It can be obtained with a diameter of nanometer level and dispersedly distributed on the amorphous matrix, which is called microcrystalline and nanocrystalline materials. [0003] Nanocrystalline materials have excellent comprehensive magnetic properties: high saturation magnetic induction, high initial permeability, low Hc, low high-frequency loss under high magnetic induction, and a resistivity of 80μΩ / cm, which is higher than permalloy (50-60μΩ / cm) high, high Br (0.9) or low Br value (1000Gs) can be obtained by longitudinal or transverse ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02
CPCH01F41/02
Inventor 赵俊金天明
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD