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A kind of iron-based nanocrystalline thin ribbon and its manufacturing method

An iron-based nanocrystalline and thin ribbon technology, applied in the field of amorphous alloys, can solve the problems of low coercivity, high price, large magnetostriction, etc., and achieve good comprehensive magnetic properties, good temperature stability, and crystallization. good effect

Inactive Publication Date: 2011-12-07
青岛高斯磁通材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although silicon steel has a high saturation magnetic induction, its iron loss is too large at medium and high frequencies, and its magnetostriction is large, which easily produces audible noise.
Cobalt-based amorphous alloys have excellent magnetic properties such as high magnetic permeability, low coercive force, and extremely low core loss, and can work in harsh environments for a long time. Development of Amorphous Alloys for Civil Use
[0004] The Fe-based amorphous alloy has excellent magnetic properties such as saturation magnetic induction, but its high temperature stability is relatively poor, and the soft magnetic properties decrease rapidly when the working temperature rises.

Method used

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  • A kind of iron-based nanocrystalline thin ribbon and its manufacturing method

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Experimental program
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Effect test

Embodiment 1

[0042] Fe, Si, ferroboron (24wt% B), Zr, Nb, Cr, Cu, ferrovanadium, Al are divided into Fe a Si b Zr c Nb d B e M x (at%) chemical composition ratio configuration, melted in a medium frequency vacuum induction furnace, and the melted alloy ingot is made into an amorphous thin strip by a single-roll extremely cold method. 40m / s, the thickness of the produced amorphous ribbon is about 20-30 microns, and the width is about 6mm. The obtained amorphous thin ribbon was wound into a ring with an outer diameter of 20 mm and an inner diameter of 10 mm, and was placed in a heat treatment furnace at 510° C. for 1 hour. The specific manufacturing steps are as follows:

[0043] 1. Smelting the master alloy. The industrial pure iron, ferroboron, silicon, zirconium, niobium, copper, chromium, ferrovanadium, and aluminum are prepared according to the chemical composition ratio to prepare the master alloy, and smelted in the intermediate frequency vacuum induction melting furnace into t...

Embodiment 2

[0053] Fe, Si, ferroboron (24wt% B), Zr, Nb, Cr, Cu, ferrovanadium, Al are divided into Fe a Si b Zr c Nb d B e M x (at%) chemical composition ratio configuration, melted in a medium frequency vacuum induction furnace, and the melted alloy ingot is made into an amorphous thin strip by a single-roll extremely cold method. 40m / s, the thickness of the produced amorphous ribbon is about 20-30 microns, and the width is about 6mm. The obtained amorphous thin ribbon was wound into a ring with an outer diameter of 20 mm and an inner diameter of 10 mm, and was placed in a heat treatment furnace at 550° C. for 0.5 hours. The Curie temperature of the iron-based nanocrystalline thin ribbons obtained by VSM, its composition and the corresponding Curie temperature are listed in Table 3; the magnetic properties were measured after 120 hours of heat preservation at 300°C, and Table 4 shows the aging without 120 hours of heat preservation. Comparison table between the data values ​​measu...

Embodiment 3

[0060] Fe, Si, ferric boron (24wt% B), Zr, Nb, Al, V, Cr, Cu as Fe a Si b Zr c Nb d B e M x (at%) chemical composition ratio configuration, melt into a master alloy ingot in an intermediate frequency vacuum induction furnace, and use a single-roll extremely cold method to make an amorphous thin strip of the alloy ingot. The surface line speed is 40m / s, and the thickness of the produced amorphous ribbon is about 20-30 microns, and the width is about 10mm. The obtained amorphous thin ribbon was wound into a ring with an outer diameter of 25 mm and an inner diameter of 10 mm, and was placed in a heat treatment furnace for heat preservation.

[0061] alloy composition

distinguish

Heat treatment process

μ a (Ten thousand)

B10(T)

Fe bal Si 3.5 B 9 Zr 1.5 Nb 1.5 Cr 0.5

Invention example

539℃, 25min

4.60

1.46

Fe bal Si 3.5 B 9 Zr 1.5 Nb 1.5 Cr 1

Invention example

542℃, 20min

4.61 ...

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PUM

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Abstract

The invention discloses an iron-based nanocrystalline thin strip, wherein, the composition of the iron-based nanocrystalline thin strip is calculated according to the atomic number percentage, and its chemical composition expression is: FeaSibZrcNbdBeMx, wherein, 76≤a≤85, 0≤b+ c+d≤10, 3≤e≤15, 0<x≤4, and a+b+c+d+e+x=100. M is any one or more of Cu, Cr, V, Al. The composition of the iron-based nanocrystalline ribbon is preferably FebalSi3.5B9Zr1.5Nb3V0.5 or FebalSi3.5B9Zr1.5Nb1.5Cr1 or FebalSi3B9Zr1Nb3Al2 or FebalSi13.5B9Nb3Cu1. The high saturation magnetic induction Bs of the iron-based nanocrystalline ribbon is not less than 1.3T. The thickness of the iron-based nano crystal strip is 20-30 microns, and the width is 5-12 mm. The present invention has the characteristics of excellent comprehensive magnetic properties and good temperature stability. In addition, the iron-based nanocrystalline thin strip produced by the manufacturing method of the present invention has good crystallization effect.

Description

Technical field: [0001] The invention relates to an amorphous alloy, in particular to an iron-based nanocrystalline thin ribbon and a manufacturing method thereof. Background technique: [0002] Amorphous alloys prepared by rapid solidification have unique mechanical properties, magnetic properties, corrosion resistance and electrical properties because they do not have long-range atomic order structure. Therefore, the research of amorphous alloy materials has become an important one in the field of materials research. Iron-based amorphous materials in amorphous alloys are widely used in various technical fields such as transformers and electromagnetic transducer elements due to their excellent magnetic properties and low cost. [0003] At present, common soft magnetic materials include silicon steel, amorphous alloys, and nanocrystalline alloys. Amorphous alloys can be divided into iron-based amorphous alloys, cobalt-based amorphous alloys, and the like according to the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02
Inventor 邹永清秦振武李楠庞靖
Owner 青岛高斯磁通材料有限公司
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