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High-performance quick-quenching Fe-Ga based magnetostriction thin strip material and preparation technology thereof

A magnetostriction and preparation process technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of small temperature coefficient, large eddy current loss, small magnetic hysteresis, etc., to achieve good flatness and linearity, high magnetic The effect of stretchability and high tape forming rate

Active Publication Date: 2013-09-25
NAT ENG RES CENT OF RARE EARTH METALLURGY & FUNCTION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fe-Ga alloy requires a lower magnetic field for saturation magnetization and a higher permeability μ, which enables it to be used in the field of sensors and smart devices that require both execution and sensing functions; Fe-Ga alloys have high strength and are brittle. Low, it can be used in devices subject to tensile stress or vibration, and the occasions where components must be rolled, drawn, machined into thin sheets, wires or particles; Fe-Ga alloys have small magnetic hysteresis and small temperature coefficients. It is easy to be applied in precise control, and the temperature range of use is large; but due to the low resistivity of the material, it will produce large eddy current loss when used at high frequencies

Method used

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  • High-performance quick-quenching Fe-Ga based magnetostriction thin strip material and preparation technology thereof
  • High-performance quick-quenching Fe-Ga based magnetostriction thin strip material and preparation technology thereof
  • High-performance quick-quenching Fe-Ga based magnetostriction thin strip material and preparation technology thereof

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: Preparation of high-performance rapid quenching Fe 80.82 Ga 18.76 Tb 0.42 Magnetostrictive Ribbon

[0031] Weigh the raw materials required for the design composition with an electronic balance, and add 3wt% of Ga burnout and 5wt% of Tb burnout, wherein Fe with a purity of 99.95% and Ga and Tb with a purity of 99.99% are used, and the prepared The raw materials are put into the vacuum non-consumable electric arc furnace, and the vacuum degree is 2×10 -3 Pa, 400Pa argon gas is introduced as a protective atmosphere and then heated to melt the raw materials into an alloy. After melting, it is refined for 3 minutes to ensure the uniformity of the alloy composition.

[0032] The alloy ingot was processed into a 8mm×8mm×15mm cuboid sample with a molybdenum wire cutting machine, and then the surface of the alloy sample was cleaned and kept in a dry state.

[0033] Put the cuboid sample into a quick quenching container consisting of a copper crucible 2 with an...

Embodiment 2

[0036] Embodiment 2: Preparation of high-performance rapid quenching Fe 79.65 Ga 17.38 Ce 2.97 Magnetostrictive Ribbon

[0037] Weigh the raw materials required for the design composition with an electronic balance, and add 3 wt % of Ga burnout and 4 wt % of Ce burnout, wherein Fe with a purity of 99.95% and Ga and Ce with a purity of 99.99% are used. The raw materials are put into the vacuum non-consumable electric arc furnace, and the vacuum degree is 2×10 -3 Pa, 400Pa argon gas is introduced as a protective atmosphere and then heated to melt the raw materials into an alloy. After melting, it is refined for 3 minutes to ensure the uniformity of the alloy composition.

[0038] The alloy ingot was processed into a 8mm×8mm×15mm cuboid sample with a molybdenum wire cutting machine, and then the surface of the alloy sample was cleaned and kept in a dry state.

[0039] Put the cuboid sample into a quick quenching container consisting of a copper crucible 2 with an opening 3 at...

Embodiment 3

[0042] Embodiment 3: Preparation of high-performance rapid quenching Fe 78.26 Ga 9.82 al 11.78 Y 0.14 Magnetostrictive Ribbon

[0043] Use an electronic balance to weigh the raw materials required for the design composition, and add 3 wt % of Ga burnout, 2 wt % of Al burnout and 4 wt % of Y burnout, and use Fe with a purity of 99.95% and 99.99% % Ga, Al, Y, put the prepared raw materials into the vacuum non-consumable electric arc furnace, and the vacuum degree is 2×10 -3 Pa, 400Pa argon gas is introduced as a protective atmosphere and then heated to melt the raw materials into an alloy. After melting, it is refined for 3 minutes to ensure the uniformity of the alloy composition.

[0044] The alloy ingot was processed into a 8mm×8mm×15mm cuboid sample with a molybdenum wire cutting machine, and then the surface of the alloy sample was cleaned and kept in a dry state.

[0045] Put the cuboid sample into a quick quenching container consisting of a copper crucible 2 with an ...

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Abstract

A preparation technology of a high-performance quick-quenching Fe-Ga based magnetostriction thin strip material is disclosed. The material compositions comprise: Fe100-x-yGaxMy, M represents one or more of Tb, Dy, La, Ce, Y, Al and Mn, wherein x=5-25, y=0.05-15, and the thickness of the thin material is 50 [mu]m-150 [mu]m. According to the preparation technology, melt-spinning and quick-quenching are carried out by employing a vacuum copper roller quick-quenching furnace, and heat treatment is carried out. The advantages are that: the developed Fe-Ga based magnetostriction thin strip material possesses excellent magnetostriction performance, better intensity and corrosion resistance, which can be used in severe environment; the thin strip produced by using the preparation technology is good in flatness and linearity, when the applied magnetic field is perpendicular to the thin strip surface, the thin strip possesses extremely high magnetostriction performance along the thin strip surface direction, and the magnetostriction coefficient reaches -1500*10<-6>; and the thin strip material is simple in preparation technology and high in strip-forming rate, and is beneficial to popularization and application.

Description

technical field [0001] The invention belongs to the field of magnetic materials, and relates to a high-performance fast-quenching Fe-Ga-based magnetostrictive strip material and a preparation process thereof. Background technique [0002] When a ferromagnet is magnetized in an external magnetic field, its length and volume change. This phenomenon is called magnetostriction or magnetostriction effect. This phenomenon was discovered by J.P.Joule in 1842, so it is also called the Joule effect. The magnetostriction of ferromagnets generally refers to linear magnetostriction, which is manifested as the linear elongation or shortening of ferromagnets during the magnetization process. The linear magnetostriction or linear magnetostriction coefficient is usually expressed by λ, λ=Δl / l, where l is the length of the ferromagnet, and Δl is the elongation in the direction of the length l of the ferromagnet. When λ>0, it is positive linear magnetostriction, which means that the ferr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/00C22C38/04C22C38/06B22D11/06H01F1/047
Inventor 张光睿江丽萍郝宏波杨建东吴双霞
Owner NAT ENG RES CENT OF RARE EARTH METALLURGY & FUNCTION MATERIALS
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