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A giant magnetostrictive material doped with a trace amount of insoluble macroatoms causing distortion enhancement and its preparation method

A magnetostrictive material, giant magnetostrictive technology, applied in the field of special functional magnetic materials, can solve the problem of no Fe-Ga magnetostrictive material, etc., to achieve increased magnetostrictive performance, high magnetostrictive performance, and improved The effect of magnetocrystalline anisotropy

Active Publication Date: 2017-04-26
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] At present, there are no reports on Fe-Ga magnetostrictive materials doped with other insoluble macroatoms at home and abroad.

Method used

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  • A giant magnetostrictive material doped with a trace amount of insoluble macroatoms causing distortion enhancement and its preparation method
  • A giant magnetostrictive material doped with a trace amount of insoluble macroatoms causing distortion enhancement and its preparation method
  • A giant magnetostrictive material doped with a trace amount of insoluble macroatoms causing distortion enhancement and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: prepare high performance (Fe 0.725 Ga 0.275 ) 99.5 u 0.5 Magnetostrictive thin strip.

[0038] Step 1: Dosing according to the target composition plus burning loss: (Fe 0.725 Ga 0.275 ) 99.5 u 0.5 , and add 3wt% of Ga burnout and 5wt% of U burnout, wherein Fe with a purity of 99.999% and Ga and U with a purity of 99.99% are used.

[0039] Step 2: Smelting the master alloy with a vacuum non-consumable arc melting furnace. Put the ingredients obtained in step 1 into the furnace of the vacuum non-consumable arc melting furnace, and vacuumize to 4×10 -3 Pa, then filled with 400Pa argon and then evacuated to 4×10 - 3 Pa for scrubbing. After washing for 3 times, fill with 1Pa argon gas, melt the ingredients under the melting current of 120A, the melting time is 4min, and repeat the melting 5 times to obtain the master alloy ingot.

[0040] Step 3: Cut the alloy ingot smelted in step 2 into blocks with a single-roller spinning belt, and clean the surf...

Embodiment 2

[0044] Embodiment 2: prepare high performance (Fe 0.83 Ga 0.17 ) 99.8 R 0.2 Magnetostrictive thin strip.

[0045] Step 1: Dosing according to the target composition plus burning loss: (Fe 0.83 Ga 0.17 ) 99.8 R 0.2 , and add 3wt% of Ga burnout and 5wt% of R burnout, in which Fe with a purity of 99.999% and Ga and R with a purity of 99.99% are used.

[0046] Step 2: Smelting the master alloy with a vacuum non-consumable arc melting furnace. Put the ingredients obtained in step 1 into the furnace of the vacuum non-consumable arc melting furnace, and vacuumize to 4×10 -3 Pa, then filled with 400Pa argon and then evacuated to 4×10 - 3Pa for scrubbing. After washing for 3 times, fill with argon gas of 1 Pa, melt the ingredients under the melting current of 130A, the melting time is 4min, and repeat the melting 5 times to obtain the master alloy ingot.

[0047] Step 3: Cut the alloy ingot smelted in step 2 into blocks with a single-roller spinning belt, and clean the surf...

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PUM

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Abstract

The invention discloses a giant magnetostriction material doped with trace non-solid-solution large atoms to cause distortion enhancement and a preparation method thereof. The material comprises the components of (Fe<1-y>Ga<y>)<100-x>M<x>, wherein x=0.01-1, y=0.05-0.35, and M is one or more kinds of Ti, Zr, Hf, Sn, Pb, In, Tl, Bi, R (symbiotic rare earth) and U. The developed Fe-Ga-based novel magnetostriction material has large tetragonality, and the largest tetragonality can be 2,250 ppm. The large magnetocrystalline anisotropy performance is caused by large tetragonal distortion, and the largest magnetocrystalline anisotropy performance can be 330 kJm<-3>. Large magnetostriction performance is caused by the large magnetocrystalline anisotropy performance. Furthermore, due to the fact that the trace doped non-solid-solution large atoms have the strong crystalline field function, the magnetocrystalline anisotropy performance can be improved, and therefore the magnetostriction performance is increased. Finally, the novel giant magnetostriction material can achieve the saturation magnetostriction performance of 2,000 ppm, and the material has the giant application prospect in the field of national defense and civil use with the prominent advantages of low cost and high performance.

Description

technical field [0001] The invention belongs to the field of special functional magnetic materials, and relates to a novel low-cost high-performance giant magnetostrictive material and a preparation method based on distortion enhancement caused by doping a small amount of insoluble macroatoms. Background technique [0002] Under the action of an external magnetic field, the length and volume of ferromagnetic materials and ferrimagnetic materials will change slightly due to the change of magnetization state. This phenomenon is called magnetostriction. Magnetostrictive materials realize fast and efficient conversion between electromagnetic energy and mechanical energy, and have been widely used in robots, computers, automobiles, actuators, controllers, transducers, sensors, micro-displacers, shockproof devices, ultrasonic waves, etc. , is an important smart material with broad application prospects in both national defense and civilian fields, and is listed as a strategic new ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/14C22C38/60C22C38/00
Inventor 蒋成保贺杨堃张天丽刘敬华
Owner BEIHANG UNIV
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