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Fe-based amorphous/nanocrystalline soft magnetic alloy thin belt and preparation method thereof

A nanocrystalline soft magnetic, iron-based amorphous technology, applied in the field of alloys, can solve problems such as less research on alloys, and achieve the effects of improving saturation magnetic induction, high thermal stability, and increasing nucleation rate

Inactive Publication Date: 2016-07-13
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although scholars from various countries have researched more on Fe-Cu-Si-B-M alloys, most of them are alloys with low Fe content <80%, and less research on alloys with high Fe content (greater than or equal to 80%).

Method used

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  • Fe-based amorphous/nanocrystalline soft magnetic alloy thin belt and preparation method thereof
  • Fe-based amorphous/nanocrystalline soft magnetic alloy thin belt and preparation method thereof
  • Fe-based amorphous/nanocrystalline soft magnetic alloy thin belt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Use pure iron, pure boron, and pure silicon as raw materials, and each component element is based on atomic percentage Fe 78 Si 13 B 9 Add to the arc melting furnace after batching;

[0049] (2) Vacuum the arc melting furnace to 5×10 -3 After Pa is filled with argon gas, the raw materials prepared in step (1) are heated to 1200-1400°C in an arc melting furnace to melt them, and the melting is repeated 5 times;

[0050] (3) Use argon gas to spray the molten liquid alloy onto a high-speed rotating copper roller at 1200~1400℃, and the surface linear speed of the copper roller is 40m / s, so as to prepare iron-based amorphous / nanocrystalline soft magnetic alloy thin band.

[0051] The crystal structure of the prepared Fe-based amorphous / nanocrystalline soft magnetic alloy ribbon was tested by XRD. The original alloy Fe 78 Si 9 B 13 The XRD diffraction pattern has sharp diffraction peaks at 2θ=45° and 2θ=60°, see image 3 , The saturation magnetization Ms is 157.79emu / g and the c...

Embodiment 2

[0053] (1) Use pure iron, pure boron, pure silicon, and pure copper as raw materials, and each component element is based on atomic percentage Fe 77 Cu 1 Si 13 B 9 Add to the arc melting furnace after batching;

[0054] (2) Vacuum the arc melting furnace to 5×10 -3 After Pa is filled with argon, the raw materials prepared in step (1) are heated to 1200-1400°C in an arc melting furnace to melt them, and the melting is repeated 5 times;

[0055] (3) Use argon gas to spray the molten liquid alloy onto a high-speed rotating copper roller at 1200~1400℃, and the surface linear speed of the copper roller is 40m / s, so as to prepare iron-based amorphous / nanocrystalline soft magnetic alloy thin band.

[0056] The crystal structure of the prepared iron-based amorphous / nanocrystalline soft magnetic alloy ribbon was examined by XRD. The XRD spectrum has a significantly broadened α-Fe diffraction peak, and there is a diffuse scattering packet under the diffraction peak, indicating the ribbon The ...

Embodiment 3

[0058] (1) Selecting 99.5% Fe pure iron and 99.9% Cu, Zr, Si, B as raw materials, according to the atomic percentage of Fe 74 Cu 1 Zr 3 Si 13 B 9 Add to the arc melting furnace after batching;

[0059] (2) Vacuum the arc melting furnace to 5×10 -3 After Pa is filled with argon, the raw materials prepared in step (1) are heated to 1200-1400°C in an arc melting furnace to melt them, and the melting is repeated 5 times;

[0060] (3) Spray the molten liquid alloy on a high-speed rotating copper roller at 1200°C with argon gas, and the surface linear velocity of the copper roller is 40m / s, thereby preparing an iron-based amorphous / nanocrystalline soft magnetic alloy ribbon. The thickness of the iron-based amorphous alloy strip is 15-40 μm, and the width is 1-5 mm.

[0061] The crystal structure of the prepared iron-based amorphous nanocrystalline soft magnetic alloy ribbon was tested by XRD. The XRD spectrum only has diffuse scattering peaks unique to amorphous, and there is no sharp diff...

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Abstract

The invention relates to a Fe-based amorphous / nanocrystalline soft magnetic alloy thin belt. A chemical expression formed by elements of the alloy thin belt is FeaSibBaCudMee, wherein the atomic percent of the elements is shown as follows: a is equal to 80-85, b is equal to 2-13, c is equal to 5-13, d is equal to 0.5-2, e is equal to 0.5-5, a+b+c+d+e is equal to 100; Me is Zr, Nb or Mo. The alloy thin belt has a thickness of 15-40 [mu]m and a width of 1-5 mm. Through adding the Me element in the method, the nucleation rate of super-cooled liquid is effectively improved, and the precipitation of a BCC nanocrystalline iron phase is promoted, Fe-based nano alloy is prepared, and the magnetostriction coefficients of a material are reduced, so that the initial magnetic conductivity is improved, and the saturated magnetic induction intensity is obviously improved.

Description

Technical field [0001] The invention relates to the field of alloys, in particular to a soft magnetic alloy ribbon with an amorphous nanocrystalline composite structure and high saturation magnetic induction and a preparation method thereof. Background technique [0002] Soft magnetic alloy materials are a type of magnetic functional materials developed earlier. From the initial discovery to the present, they have experienced electrical pure iron, electrical steel, permalloy, Fe~Co alloy, soft ferrite, and amorphous alloys. system. Among them, the amorphous alloy soft magnetic material has the characteristics of high resistivity, high permeability, and low loss. Compared with silicon steel, its production process is simple and no special processing is required. It is considered as an ideal core material. [0003] However, compared with traditional silicon steel core materials, amorphous alloy soft magnetic materials still have some shortcomings. The biggest shortcoming lies in its...

Claims

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Application Information

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IPC IPC(8): C22C45/02B22D11/06
CPCC22C45/02B22D11/0611C22C1/11
Inventor 李强史少凯王兴华许超群冯玉婷董闯刘帅
Owner HEBEI UNIV OF TECH
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