High-performance bonded rare earth magnetostrictive material and preparation method thereof

A preparation process and rare earth magnetic technology, which is applied in the manufacture/assembly of magnetostrictive devices, material selection for magnetostrictive devices, device material selection, etc., can solve the problems of high manufacturing cost, high brittleness, low resistance, etc. , to achieve the effects of low production cost, enhanced tensile strength, and increased frequency of use

Inactive Publication Date: 2016-11-09
上海归经智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high cost of preparation of this material, high brittleness, and due to its low resistance characteristics, the eddy current effect at high frequencies greatly limits its application in high-frequency fields such as ultrasound.

Method used

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  • High-performance bonded rare earth magnetostrictive material and preparation method thereof
  • High-performance bonded rare earth magnetostrictive material and preparation method thereof
  • High-performance bonded rare earth magnetostrictive material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A high-performance bonded rare-earth magnetostrictive material formulation consists of the following raw materials in parts by weight:

[0027] 3 parts of terbium metal, 7 parts of dysprosium metal, 15 parts of metal iron, 10 parts of binder, 30 parts of acetone solution, 10 parts of curing agent, and 10 parts of coupling agent.

[0028] The binder selects solid epoxy resin; the mass fraction of the acetone solution is 67%; the curing agent selects polyethylene polyamine; the coupling agent selects KH-550 silane coupling agent.

[0029] Its preparation process comprises the following steps:

[0030] (1) Mix metal terbium, metal dysprosium, and metal iron according to the molar mass ratio of 3:7:15, and place the prepared materials in a vacuum non-consumable electric arc furnace for argon melting to obtain Alloy ingot, furnace vacuum degree is 6×10 -3 Pa, and remelted 3 times at 950°C;

[0031] (2) Under the protection of gasoline, the alloy ingot is pulverized by an ...

Embodiment 2

[0036] A high-performance bonded rare-earth magnetostrictive material formulation consists of the following raw materials in parts by weight:

[0037] 4 parts of metal terbium, 8 parts of metal dysprosium, 17 parts of metal iron, 12 parts of binder, 35 parts of acetone solution, 12 parts of curing agent, and 13 parts of coupling agent.

[0038] The binder is solid epoxy resin; the mass fraction of the acetone solution is 70%; the curing agent is polyethylene polyamine; the coupling agent is KH-550 silane coupling agent.

[0039] Its preparation process comprises the following steps:

[0040] (1) Mix metal terbium, metal dysprosium, and metal iron according to the molar mass ratio of 4:8:17, and place the prepared material in a vacuum non-consumable electric arc furnace for argon melting to obtain Alloy ingot, furnace vacuum degree is 6×10 -3 Pa, and remelted 3 times at 950°C;

[0041] (2) Under the protection of gasoline, the alloy ingot is pulverized by an ingot disc mill ...

Embodiment 3

[0046] A high-performance bonded rare-earth magnetostrictive material formulation consists of the following raw materials in parts by weight:

[0047] 5 parts of metal terbium, 9 parts of metal dysprosium, 19 parts of metal iron, 14 parts of binder, 37 parts of acetone solution, 11 parts of curing agent, and 14 parts of coupling agent.

[0048] The binder selects solid epoxy resin; the mass fraction of the acetone solution is 67%; the curing agent selects polyethylene polyamine; the coupling agent selects KH-550 silane coupling agent.

[0049] Its preparation process comprises the following steps:

[0050] (1) Mix metal terbium, metal dysprosium, and metal iron according to the molar mass ratio of 5:9:19, and place the prepared material in a vacuum non-consumable electric arc furnace for argon-filled melting to obtain Alloy ingot, furnace vacuum degree is 6×10 -3 Pa, and remelted 3 times at 950°C;

[0051] (2) Under the protection of gasoline, the alloy ingot is pulverized ...

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Abstract

The invention discloses a high-performance bonded rare earth magnetostrictive material and a preparation method thereof. The high-performance bonded rare earth magnetostrictive material comprises the following raw materials, in parts by weight:3-5 parts of metal terbium, 5-10 parts of metal dysprosium, 15-20 parts of metal iron, 10-15 parts of binders, 30-40 parts of acetone solution, 10-15 parts of curing agents and 10-15 parts of coupling agents. The method is characterized by blending the metal terbium, the metal dysprosium and the metal iron according to a ratio of 3:7:19 in molar mass, and placing the mixture in a vacuum non-consumable arc furnace for argon-filling melting to obtain an alloy ingot; then, under the protection of gasoline, smashing the alloy ingot through an ingot disc to obtain powder particles having required particle sizes; then, mixing the obtained powder particles with the binders, then, placing the mixture into the acetone solution, stirring the solution and meanwhile, heating the solution with an infrared lamp until the materials are uniformly blended and acetone is volatilized completely; after cooling, adding the curing agents, and after carrying out full stirring and uniform blending, keeping the obtained mixture in a certain intensity of magnetic field for a period of time; and then, carrying out compression moulding through a hydraulic press, and finally, carrying out curing processing. The tensile strength of the obtained material is enhanced, and the production cost is low.

Description

technical field [0001] The invention relates to the field of preparation technology of magnetostrictive materials, in particular to a formula and preparation technology of a high-performance bonded rare earth magnetostrictive material. Background technique [0002] The rare earth-iron series giant magnetostrictive material is a new type of functional material developed by Clark et al. The commonly used component is Tb 0.27 Dy 0.73 Fe 2 . If the composition and preparation process of the material are properly controlled, the magnetostrictive strain can reach about 70% of that of the alloy, and the frequency of use can be increased to more than 100kHz. Due to its many excellent properties, it is widely used in transducers, actuators, and Source vibration elimination and sensors have been more and more widely used, so it is generally considered to be a new economic growth point in the 21st century. However, the high preparation cost and high brittleness of this material, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/20H01L41/47B22F3/02C22C38/00C22C33/02
CPCC22C33/02C22C38/005B22F3/02H10N35/85H10N35/01
Inventor 阎惠至张伟魏发云
Owner 上海归经智能科技有限公司
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