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Magnetostrictive material and preparation method thereof

A technology of magnetostrictive materials and raw materials, which is applied in the direction of material selection, device material selection, magnetic layer, etc. for magnetostrictive devices, can solve the problems of poor plasticity of alloy materials, complex manufacturing process, poor oxidation resistance, etc. Achieve good oxidation resistance, good consistency and good toughness

Active Publication Date: 2010-02-24
BEIJING MAGORIENTAL MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In the above research on Fe-Ga-based flake materials, the common shortcomings are: their alloy materials have poor plasticity, poor oxidation resistance, and the manufacturing process is too complicated, including sheathing, hot rolling, and warm rolling of the master alloy. And cold rolling, the total number of passes is more than 100, and repeated stress relief annealing in the rolling process

Method used

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  • Magnetostrictive material and preparation method thereof
  • Magnetostrictive material and preparation method thereof
  • Magnetostrictive material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: prepare Fe with rolling method 80 Ga 16.5 Al 1.5 Cr 2 Thin sheet magnetostrictive alloy material

[0047] Use an electronic balance to weigh the raw materials required for the design, use an iron source with a purity greater than 99.5%, and add 3% more Ga burning loss, put the prepared raw materials into the crucible of the vacuum induction furnace, and evacuate to 5× 10 -3 After Pa, fill it with argon gas to 0.5MPa to protect the raw materials from oxidation, and start smelting. After it is completely melted, it can be refined for 3 minutes, and then cast into alloy ingots in the furnace;

[0048] The as-cast alloy ingot is forged at 900°C into a rectangular billet with a thickness of 6.5mm, and the deformation is about 70%;

[0049] The forging billet is hot rolled at 950°C, and the deformation is about 80%. Control the deformation rate and pass interval time, and roll to a thickness of 1.3mm;

[0050] The hot-rolled slab is cold-rolled at room te...

Embodiment 2

[0054] Embodiment 2: prepare Fe with rolling method 81 Ga 16.5 Al 1.1 Zr 0.9 sn 0.5 Thin sheet magnetostrictive alloy material

[0055] Weigh the required raw materials, use an iron source with a purity greater than 99.5%, and add 2% more Ga burning loss, put the prepared raw materials into the crucible of the vacuum induction furnace, and evacuate to 5×10 -3 Pa filled with argon to 0.5MPa to protect raw materials from oxidation, smelting and casting into alloy ingots;

[0056] The as-cast alloy ingot is forged at 950°C into a rectangular billet with a thickness of 6.2mm, and the deformation is about 65%;

[0057] The forged blank is hot rolled at 950°C, and the deformation is about 75%. Control the deformation rate and pass interval time, and roll to a thickness of 1.6mm;

[0058] The hot-rolled slab is cold-rolled at room temperature for 15 passes, with a deformation of about 70%, and finally rolled to 0.48mm;

[0059] The as-rolled alloy was kept at 1200°C for 4 hou...

Embodiment 3

[0062] Embodiment 3: prepare Fe with rolling method 79.8 Ga 17 Al 1.2 V 1.5 Sb 0.5 Thin sheet magnetostrictive alloy material

[0063] Weigh the required raw materials, use an iron source with a purity greater than 99.5%, and add 4% more Ga burning loss, put the prepared raw materials into the crucible of the vacuum induction furnace, and evacuate to 5×10 -3 Pa filled with argon to 0.5MPa to protect raw materials from oxidation, smelting and casting into alloy ingots;

[0064] The as-cast alloy ingot is forged at 1000°C into a rectangular billet with a thickness of 5.6mm, and the deformation is about 70%;

[0065] The forging billet is hot rolled at 1000°C, and the deformation is about 70%. Control the deformation rate and pass interval time, and roll to a thickness of 1.7mm;

[0066] The hot-rolled slab is cold-rolled at room temperature for 18 passes, with a deformation of about 80%, and finally rolled to 0.34mm;

[0067] The as-rolled alloy was kept at 1150°C for 6 ...

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Abstract

The invention relates to a method for preparing a Fe-Ga-Al-based flaky magnetostrictive material from a Fe-Ga-Al-based raw material, and the Fe-Ga-Al-based flaky magnetostrictive material prepared thereby. The component (in atom fraction) of the used Fe-Ga-Al-based raw material is Fe1-x-y-zGaxAlyMz, wherein x is between 0.10 and 0.30, y is between 0.01 and 0.10, z is between 0.001 to 0.05, and M is one or more of V, Cr, Zr, Sb, Sn, Ti, SiC and the like.

Description

technical field [0001] The invention relates to a magnetostrictive material and a preparation method thereof. Background technique [0002] When ferromagnetic and ferrimagnetic substances change their magnetization state, their own length and volume change slightly. This phenomenon is called magnetostriction. The change in volume is called volume magnetostriction; the change in length is called linear magnetostriction. Practical magnetostrictive materials refer to materials with linear magnetostrictive properties. The size of the magnetostriction is expressed by the magnetostriction coefficient λ, λ=ΔL / L (L is the original length of the material, and ΔL is the change in the length of the material when the magnetization state changes). The maximum magnetostriction coefficient produced by the material when it is magnetized is called the saturation magnetostriction coefficient λ s . Usually, with (3 / 2)λ s Magnetostriction as a performance characterization parameter for mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/06C21D8/00
CPCC22C38/14H01F10/14C22C38/06C22C38/008C22C38/12H01L41/20C22C38/18C21D8/1233C21D8/1244H10N35/85
Inventor 高学绪李纪恒张茂才朱洁董丽娜
Owner BEIJING MAGORIENTAL MATERIALS TECH CO LTD
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