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A kind of co-ni-mn-si-tb giant magnetostrictive material and preparation method thereof

A co-ni-mn-si-tb, giant magnetostrictive technology

Active Publication Date: 2021-11-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires magnetic field annealing, which increases the cost of material preparation and complicated procedures, which is not conducive to factory production

Method used

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  • A kind of co-ni-mn-si-tb giant magnetostrictive material and preparation method thereof
  • A kind of co-ni-mn-si-tb giant magnetostrictive material and preparation method thereof
  • A kind of co-ni-mn-si-tb giant magnetostrictive material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A Co-Ni-Mn-Si-Tb giant magnetostrictive material and a preparation method thereof, specifically implemented according to the following steps:

[0027] Step 1: Raw material ratio: according to the alloy chemical formula Co 0.97 Ni 0.03 MnSi (1-x) Tb x , x=0.002, take the Co, Ni, Mn, Si, Tb that take purity as 99.99%, carry out proportioning;

[0028] Step 2: Conventional vacuum arc melting: Put the elemental metals obtained by the ratio into the vacuum arc melting furnace, and place them according to the principle of higher melting point on top and lower melting point on the bottom; close the vacuum chamber, use mechanical pump and molecular pump Pull the vacuum in the chamber to 10 -5 Pa; filled with protective gas argon (ensure that the air pressure in the cavity is 0.06MPa to 0.09MPa lower than the atmospheric pressure); during the melting process, try to use a lower current, and ensure that the size of the melting current and the melting time of each group are eq...

Embodiment 2

[0033] A Co-Ni-Mn-Si-Tb giant magnetostrictive material and a preparation method thereof, specifically implemented according to the following steps:

[0034] Step 1: Raw material ratio: according to the alloy chemical formula Co 0.97 Ni 0.03 MnSi (1-x) Tb x , x=0.004, take the Co, Ni, Mn, Si, Tb that take purity as 99.99%, carry out proportioning;

[0035] Step 2: Conventional vacuum arc melting: Put the elemental metals obtained by the ratio into the vacuum arc melting furnace, and place them according to the principle of higher melting point on top and lower melting point on the bottom; close the vacuum chamber, use mechanical pump and molecular pump Pull the vacuum in the chamber to 10 -5 Pa; filled with protective gas argon (ensure that the air pressure in the cavity is 0.06MPa to 0.09MPa lower than the atmospheric pressure); during the melting process, try to use a lower current, and ensure that the size of the melting current and the melting time of each group are eq...

Embodiment 3

[0040] A Co-Ni-Mn-Si-Tb giant magnetostrictive material and a preparation method thereof, specifically implemented according to the following steps:

[0041] Step 1: Raw material ratio: according to the alloy chemical formula Co 0.97 Ni 0.03 MnSi (1-x) Tb x , x=0.005, take the Co, Ni, Mn, Si, Tb that take purity as 99.99%, carry out proportioning;

[0042] Step 2: Conventional vacuum arc melting: Put the elemental metals obtained by the ratio into the vacuum arc melting furnace, and place them according to the principle of higher melting point on top and lower melting point on the bottom; close the vacuum chamber, use mechanical pump and molecular pump Pull the vacuum in the chamber to 10 -5 Pa; filled with protective gas argon (ensure that the air pressure in the cavity is 0.06MPa to 0.09MPa lower than the atmospheric pressure); during the melting process, try to use a lower current, and ensure that the size of the melting current and the melting time of each group are eq...

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Abstract

The invention provides a Co-Ni-Mn-Si-Tb giant magnetostrictive material and a preparation method thereof, the material composition is Co 0.97 Ni 0.03 MnSi (1‑x) Tb x (x=0, 0.002, 0.004, 0.005), the preparation method is as follows: first, the raw materials are mixed and smelted into an alloy, then sliced ​​and sealed, and finally annealed at high temperature, and the furnace is naturally cooled. The material prepared by the present invention has variable magnetic properties, texture <112> orientation, and good magnetostrictive performance (Co 0.97 Ni 0.03 MnSi 0.995 Tb 0.005 Reached 1000ppm at 290K), no hysteresis, and low critical field. The preparation method has a simple process, can save time and cost, and simultaneously provides a simple and feasible method for rapidly preparing the orientation texture.

Description

technical field [0001] The invention relates to the field of material science and engineering, in particular to a Co-Ni-Mn-Si-Tb giant magnetostrictive material and a preparation method thereof. Background technique [0002] Giant magnetostrictive materials refer to a class of materials whose length or volume changes greatly under the action of an external magnetic field. This change can realize the mutual conversion between electromagnetic energy and mechanical energy. It has the characteristics of fast response speed, high energy density, and large magnetostriction. It is widely used in acoustic transducers, precision CNC machine tools, pressure sensors, etc. Currently widely used is Terfenol-D from RTREMA Company of the United States, but Terfenol-D uses a large amount of rare earths, resulting in a huge increase in cost, which greatly limits its wide application. Current research shows that primary magnetic phase change materials (such as Gd-Si-Ge, La-Fe-Si, MnFe(P, Ge)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/02C22F1/02H01L41/20
CPCC22C30/00C22C19/07C22C19/005C22C22/00C22C1/02C22F1/02H10N35/85
Inventor 时阳光戴键杨庆林丁贺贺
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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