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Fe-Ga base magnetic striction wire and preparation method thereof

A magnetostrictive, fe-ga technology, applied in the direction of manufacturing tools, heat treatment equipment, furnace types, etc., can solve the problems of increasing process complexity and manufacturing cost, low plasticity of Fe-Ga alloy, poor wire continuity, etc. It is beneficial to popularization and application, good magnetostrictive performance, good process repeatability and stability

Inactive Publication Date: 2009-04-29
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low plasticity of Fe-Ga alloy, grinding is required to reduce surface defects during the forming process, and repeated stress relief annealing processes increase the complexity of the process and the manufacturing cost.
Moreover, the continuity of the prepared silk is not good, and the surface quality is not high

Method used

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  • Fe-Ga base magnetic striction wire and preparation method thereof
  • Fe-Ga base magnetic striction wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: Water spinning method prepares Fe 75 Ga 14 Al 4 B 7 Magnetostrictive wire

[0031] Use an electronic balance to weigh the raw materials required for the design, use Fe and Al with a purity greater than 99.9%, Ga and B with a purity of 99.99%, and add an additional 3at% Ga burning loss, and put the prepared raw materials into the vacuum arc furnace In the crucible, evacuate to 5×10 -3 Pa filled with argon to 0.5MPa to protect the raw materials from oxidation, start smelting, smelting for 4 minutes to form an alloy ingot, turn the ingot over and smelt repeatedly 3 times to make the composition of the alloy uniform, and then mechanically break the alloy ingot into small pieces block to be used;

[0032] Start the motor, set the linear speed to 9m / s, pass in cooling water, and then use high-frequency induction to heat the alloy block placed in the quartz tube. There is a nozzle with a diameter of 0.08mm at the bottom of the quartz tube, and the inner apex...

Embodiment 2

[0034] Embodiment 2: water spinning method prepares Fe 76 Ga 13 Al 5 Ti 4 Y 2 Magnetostrictive amorphous wire

[0035] Weigh the raw materials required for the design with an electronic balance, wherein Fe and Al, 99.95% Ti and Y, and 99.99% Ga with a purity greater than 99.9% are used, and an additional 3 at% Ga burning loss is added, and the prepared raw materials are placed into the crucible of the vacuum electric arc furnace, and evacuated to 5×10 -3 Pa filled with argon to 0.5MPa to protect the raw materials from oxidation, start smelting, smelting for 4 minutes to form an alloy ingot, turn the ingot over and smelt repeatedly 3 times to make the composition of the alloy even, and then mechanically divide the alloy ingot into small pieces stand-by;

[0036] Start the motor, set the linear speed to 10m / s, pass in cooling water, and then use high-frequency induction to heat the alloy block placed in the quartz tube. There is a nozzle with a diameter of 0.07mm at the bo...

Embodiment 3

[0038] Embodiment 3: water spinning method prepares Fe 75 Ga 15 Al 3 B 5 Zr 2 Magnetostrictive microcrystalline wire

[0039] Use an electronic balance to weigh the raw materials required for the design, using Fe, Al and Zr with a purity greater than 99.9%, Ga and B with a purity of 99.99%, and adding an additional 3at% of Ga burnout, and put the prepared raw materials into the vacuum arc In the crucible of the furnace, evacuate to 5×10 -3 Pa filled with argon to 0.5MPa to protect the raw materials from oxidation, start smelting, smelting for 4 minutes to form an alloy ingot, turn the ingot over and smelt repeatedly 3 times to make the composition of the alloy uniform, and then mechanically break the alloy ingot into small pieces block to be used;

[0040] Start the motor, set the linear speed to 8m / s, pass in cooling water, and then use high-frequency induction to heat the alloy block placed in the quartz tube. There is a nozzle with a diameter of 0.1mm at the bottom of...

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Abstract

The invention relates to a Fe-Ga-based magnetostrictive wire and a method for preparing the same. The alloy composition (atom fraction) used in the method is Fe1-x-y-zGaxAlyMz, wherein M is selected from one or more than one of Co, B, Cr, V, Nb, Zr, Be, Y, Ti and the like; x is equal to between 0.10 and 0.30; y is equal to between 0.01 and 0.15; z is equal to between 0.000 and 0.1, and the balance is Fe. The invention makes use of a rotating water spinning method to prepare a Fe-Ga-based magnetostrictive microcrystalline or amorphous wire; and the method has the advantages of simple and convenient process, high wire-forming rate, good process repeatability and stability and the like. The wire prepared by the method has good roundness and linearity, and has higher magnetostrictive coefficient, good corrosion resistance and good mechanical property at the same time. The diameter of the prepared Fe-Ga-based magnetostrictive microcrystalline or amorphous wire is between 0.01 and 0.5 millimeter, and the amorphous wire can be made into an alloy wire with a nano-crystalline structure after heat treatment. Under a low magnetic field condition, the magnetostrictive property of the Fe-Ga-based magnetostrictive wire can reach 160 * 10<-6>.

Description

technical field [0001] The invention belongs to the field of magnetic materials, and relates to a Fe-Ga-based magnetostrictive wire 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. When a ferromagnetic material is subjected to both an axial magnetic field and a circumferential magnetic field, it will produce a twist, which is called the Wiedemann effect. The Wiedemann effect is a magnetomechanical effect of ferromagnetic materials. It has always been considered to be related to the magnetostrictive properties of materials and belongs to a special magnetostrictive phenomenon. [0003] ...

Claims

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Application Information

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IPC IPC(8): C22C38/06C22C1/03H01L41/16C21D9/52
Inventor 高学绪李纪恒何承先朱洁张茂才周寿增
Owner UNIV OF SCI & TECH BEIJING
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