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Nanocrystalline alloy magnetic core and preparation method thereof

A technology of nanocrystalline alloys and amorphous alloys, which is applied to magnetic objects, magnetic materials, circuits, etc., can solve the problems of low effective permeability, large loss, and large coercive force, and achieve high permeability and low loss , The effect of low coercive force

Active Publication Date: 2022-06-28
宁波辰磁电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to solve the problem that the nanocrystalline alloy magnetic cores on the market have more or less low effective permeability, large coercive force and large loss technical problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A nanocrystalline alloy magnetic core, comprising the following components by weight percentage: Cu 0.6%, Si 8.0%, B 5.5%, Sr 0.1%, Ir 0.05%, Bi 0.03%, Ni 0.8%, Te 0.1%, rare earth element 0.01%, and the balance Fe; the rare earth element is Gd and Ce mixed in a mass ratio of 2:1.

[0030] A preparation method of the nanocrystalline alloy magnetic core, comprising the following steps:

[0031] Step S1, mix each component according to the weight percentage, place it in an intermediate frequency melting furnace and smelt to obtain a molten liquid, then refine, and then spray the alloy solution on a rapidly rotating copper coil to rapidly cool and sling to obtain an amorphous alloy thin strip. , and then wound into an amorphous alloy core;

[0032] Step S2, performing crystallization annealing treatment on the amorphous alloy magnetic core produced in step S1 in a vacuum environment, and then continuing the heat treatment to prepare a nanocrystalline alloy magnetic core. ...

Embodiment 2

[0038] A nanocrystalline alloy magnetic core is made of the following components by weight percentage: Cu 0.7%, Si 8.5%, B 6%, Sr 0.15%, Ir 0.08%, Bi 0.05%, Ni 1%, Te 0.15%, rare earth element 0.02%, and the balance Fe; the rare earth element is Gd and Ce mixed in a mass ratio of 2.2:1.

[0039] A preparation method of the nanocrystalline alloy magnetic core, comprising the following steps:

[0040] Step S1, mix each component according to the weight percentage, place it in an intermediate frequency melting furnace and smelt to obtain a molten liquid, then refine, and then spray the alloy solution on a rapidly rotating copper coil to rapidly cool and sling to obtain an amorphous alloy thin strip. , and then wound into an amorphous alloy core;

[0041] Step S2, performing crystallization annealing treatment on the amorphous alloy magnetic core produced in step S1 in a vacuum environment, and then continuing the heat treatment to prepare a nanocrystalline alloy magnetic core. ...

Embodiment 3

[0046] A nanocrystalline alloy magnetic core, comprising the following components by weight percentage: Cu 0.8%, Si 9%, B6.5%, Sr 0.2%, Ir 0.1%, Bi 0.06%, Ni 1.2%, Te 0.2%, 0.025% of rare earth elements, and the balance of Fe; the rare earth elements are Gd and Ce mixed in a mass ratio of 2.5:1.

[0047] A preparation method of the nanocrystalline alloy magnetic core, comprising the following steps:

[0048] Step S1, mix each component according to the weight percentage, place it in an intermediate frequency melting furnace and smelt to obtain a molten liquid, then refine, and then spray the alloy solution on the rapidly rotating copper coil to rapidly cool the strip to obtain an amorphous alloy thin strip. , and then wound into an amorphous alloy core;

[0049] Step S2, performing crystallization annealing treatment on the amorphous alloy magnetic core produced in step S1 in a vacuum environment, and then continuing the heat treatment to prepare a nanocrystalline alloy magne...

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PUM

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Abstract

The invention discloses a nanocrystalline alloy magnetic core, which is characterized by being prepared from the following components in percentage by weight: 0.6 to 1.0 percent of Cu, 8.0 to 10.0 percent of Si, 5.5 to 8.0 percent of B, 0.1 to 0.3 percent of Sr, 0.05 to 0.15 percent of Ir, 0.03 to 0.10 percent of Bi, 0.8 to 1.5 percent of Ni, 0.1 to 0.3 percent of Te, 0.01 to 0.04 percent of rare earth element and the balance of Fe. The invention further discloses a preparation method of the nanocrystalline alloy magnetic core. The nanocrystalline alloy magnetic core disclosed by the invention is high in magnetic conductivity, relatively low in coercive force and small in loss.

Description

technical field [0001] The invention relates to the technical field of magnetic materials, in particular to a nanocrystalline alloy magnetic core and a preparation method thereof. Background technique [0002] In recent years, with the increasingly tense energy crisis at home and abroad and the increasingly serious environmental pollution problem, the requirements for energy saving and consumption reduction of electrical equipment have become higher and higher, which requires the magnetic core, which is one of the main accessories of electrical equipment, to have high saturation magnetic induction intensity. , low high frequency loss, high magnetic permeability and good high frequency frequency characteristics and other excellent high frequency comprehensive performance. [0003] At present, common magnetic core materials include silicon steel, ferrite, amorphous alloy, nanocrystalline alloy, etc. Although silicon steels are cheap materials and have high magnetic flux densi...

Claims

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Application Information

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IPC IPC(8): C22C38/16C22C38/02C22C38/08C22C38/60C22C45/02C21D1/26B22D11/06C21C7/064C21D1/04H01F1/153
CPCC22C38/16C22C38/02C22C38/002C22C38/08C22C38/60C22C38/005C22C45/02C22C33/003C21D1/26B22D11/0611C21C7/0645C21D1/04H01F1/15308H01F1/15325H01F1/15333C21D2201/03Y02P10/20
Inventor 宓建峰
Owner 宁波辰磁电子科技有限公司
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