High-performance polycrystal texture Fe-Ga-based magnetic deformation slice material and preparation method thereof

A magnetostrictive, high-performance technology that can be used in the selection of materials for magnetostrictive devices, the manufacture/assembly of magnetostrictive devices, and the manufacture/assembly of piezoelectric/electrostrictive devices. The problems of complexity and small saturation magnetostriction coefficient of thin slices can achieve the effect of simple manufacturing process, high magnetostrictive performance, and beneficial to popularization and application.

Inactive Publication Date: 2009-06-24
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the above-mentioned studies on Fe-Ga-based flake materials, the common deficiency is that the manufacturing process is too complicated, including cladding of the master alloy, hot rolling, warm rolling and cold rolling. The total number of passes is more than 100. Repeated stress-relief annealing during rolling and the saturation magnetostriction coefficient of the resulting sheet is small

Method used

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  • High-performance polycrystal texture Fe-Ga-based magnetic deformation slice material and preparation method thereof
  • High-performance polycrystal texture Fe-Ga-based magnetic deformation slice material and preparation method thereof
  • High-performance polycrystal texture Fe-Ga-based magnetic deformation slice material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Preparation of high-performance polycrystalline textured Fe 82.24 Ga 17 B 0.75 S 0.01 Magnetostrictive sheet

[0034] Use an electronic balance to weigh the raw materials required for the design, which use Fe with a purity greater than 99.9%, Ga, B and S with a purity of 99.99%, and add 3% of the Ga burnout, and put the prepared raw materials into the vacuum induction furnace. In the crucible, vacuum up to 3×10 -3 Pa, through the argon to maintain the vacuum to 2 × 10 4 Heating after Pa to melt the raw materials to form an alloy, refining for 3 minutes after melting to ensure the uniformity of the alloy composition, and casting the refined alloy into an alloy ingot;

[0035] The alloy ingot is forged at 950°C into a roughly rectangular parallelepiped billet with a thickness of about 10mm, which destroys the as-cast structure and provides a raw material shape suitable for hot rolling;

[0036] The forged alloy is subjected to hot rolling at 950°C, warm r...

Embodiment 2

[0039] Example 2: Preparation of high-performance polycrystalline textured Fe 80.95 Ga 17 (MnS) 2 sn 0.05 Magnetostrictive sheet

[0040] Use an electronic balance to weigh the raw materials required for the design, which use Fe with a purity greater than 99.9%, Ga, MnS and Sn with a purity of 99.99%, and add 3% more Ga burnout, and put the prepared raw materials into the vacuum induction furnace. In the crucible, vacuum up to 3×10 -3 Pa, through the argon to maintain the vacuum to 2 × 10 4 Heating after Pa to melt the raw materials to form an alloy, refining for 3 minutes after melting to ensure the uniformity of the alloy composition, and casting the refined alloy into an alloy ingot;

[0041] The alloy ingot is forged at 950°C into a roughly rectangular parallelepiped billet with a thickness of about 8mm, which destroys the as-cast structure and provides a raw material shape suitable for hot rolling;

[0042] The forged alloy is subjected to hot rolling at 950°C, warm...

Embodiment 3

[0045] Example 3: Preparation of high-performance polycrystalline textured Fe 81.95 Ga 17 (AlN) 1 Sb 0.05 Magnetostrictive sheet

[0046] Use an electronic balance to weigh the raw materials required for the design, which use Fe with a purity greater than 99.9%, Ga, AlN and Sb with a purity of 99.99%, and add 3% of the Ga burnout, and put the prepared raw materials into the vacuum induction furnace. In the crucible, vacuum up to 3×10 -3 Pa, through the argon to maintain the vacuum to 2 × 10 4 Heating after Pa to melt the raw materials to form an alloy, refining for 3 minutes after melting to ensure the uniformity of the alloy composition, and casting the refined alloy into an alloy ingot;

[0047] The alloy ingot is forged at 950°C into a roughly rectangular parallelepiped billet with a thickness of about 8mm, which destroys the as-cast structure and provides a raw material shape suitable for hot rolling;

[0048] The forged alloy is subjected to hot rolling at 950°C, wa...

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Abstract

The invention relates to a high-performance polycrystalline texture Fe-Ga-based magnetostrictive thin material and a preparation method thereof; the component of the material is Fe100-x-y-zGaxMyNz; M stands for one or more among B, Nb, Cr, VC, TiC, MnS and AlN; N stands for one or more among S, Sb and Sn; wherein, x is equal to 15-25; y is equal to 0.5-3.0; z is equal to 0.01-0.05; and the residual is iron. The method has the following process key points: based on the requirements of the material composition, melting master alloy; casting alloy ingot; hot-forging and cogging; rolling the material into the appropriate thickness; and a variety of follow-up heat treatment. The Fe-Ga-based magnetostrictive thin material has obvious (100)<001>cubic texture or (110) <001> goss texture; and the maximum magnetostriction coefficient (3/2)lambdas is up to 280 multiplying 10<-6>.

Description

technical field [0001] The invention belongs to the field of magnetic materials, and relates to a high-performance polycrystalline textured magnetostrictive sheet material and a preparation method 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. Magnetostriction can be divided into linear magnetostriction and volume magnetostriction. Practical magnetostrictive materials refer to materials with linear magnetostrictive properties. The linear magnetostriction or linear magnetostriction coefficient is usually expressed by λ, λ=ΔL / L (L is the original length of the material, ΔL is the change of the sample when the magnetization state changes). When λ>0, it is positive magnetostriction, the ferromagnet elongates in the direction of the magnetic field, and shortens in the direction perpendicular to the magnetic field; when λ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/20H01L41/22C22C38/00C22C33/06H01L41/47
Inventor 高学绪何承先李纪恒包小倩张茂才
Owner UNIV OF SCI & TECH BEIJING
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