ThMn12 type soft magnetic material and preparation method thereof

A soft magnetic composite material and magnetic field technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of narrow frequency band, high-frequency soft magnetic performance reduction, high complex permeability, etc., and achieve the effect of eliminating electromagnetic interference

Active Publication Date: 2012-05-09
惠州市福益乐永磁科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ferrite materials widely used at present have the disadvantages of narrow frequency band, high density, and low complex permeability at high frequencies.
Although metal soft magnetic materials have high conductivity and are prone to decrease in high-frequency soft magnetic properties due to eddy current loss in electromagnetic waves, it is not conducive to obtaining high complex permeability at high frequencies, and there are relatively few materials in this regard. Especially at this stage, there are fewer soft magnetic materials suitable for 1GHz or even higher operating frequencies

Method used

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  • ThMn12 type soft magnetic material and preparation method thereof
  • ThMn12 type soft magnetic material and preparation method thereof
  • ThMn12 type soft magnetic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 1.50g of neodymium and 3.91g of iron, as well as 1.02g of vanadium and 1.77g of cobalt, melt them into ingots in an electric arc furnace under the protection of argon, and then put them into a vacuum quartz tube for homogenization at 950°C for one week. Grind the homogenized ingot into particles of about 50 microns with an agate mortar, then put the particles into an agate ball mill jar and add 100ml of n-hexane and 0.2ml of phthalate coupling agent to grind on a planetary ball mill to make 10 For powder particles below micron, in ball milling, the mass ratio of ball to material is 20:1, the speed of ball mill is 400r / min, and the ball milling time is set to 12h. Finally, the samples were taken out and dried, and the results were as follows: Figure 1 shown. Depend on figure 1 It can be seen that before orientation, the characteristic peaks of the sample are obvious, so it can be known that the sample has a ThMn12 structure, and there is no other impurity phase ...

Embodiment 2

[0026] Weigh 1.49g of praseodymium, 5.58g of iron, and 1.92g of molybdenum, melt them into ingots in an electric arc furnace under the protection of argon, and then put them into a vacuum quartz tube for homogenization at 950°C for one week. Grind the homogenized ingot into particles of about 50 microns with an agate mortar, then put the particles into an agate ball mill jar and add 100ml of n-hexane and 0.2ml of phthalate coupling agent to grind on a planetary ball mill to make 10 For powder particles below micron, in ball milling, the mass ratio of ball to material is 20:1, the speed of ball mill is 400r / min, and the ball milling time is set to 12h. Finally, the samples were taken out and dried.

[0027]Add titanate coupling agent diluted with isopropanol to the powder after ball milling, wherein the mass of titanate is 1% of the mass of the sample, stir and ultrasonically for 30 minutes, and dry. After ultrasonication, the sample and the paraffin wax dissolved in n-hexane ...

Embodiment 3

[0029] Weigh 0.98g of neodymium, 5.89g of cobalt (purity 0.9999) and 1.02g of vanadium, melt them into ingots in an electric arc furnace under the protection of argon, and then put them into a vacuum quartz tube for heat preservation and homogenization at 950°C for one week. Grind the homogenized ingot into particles of about 50 microns with an agate mortar, then put the particles into an agate ball mill jar and add 100ml of n-hexane and 0.2ml of phthalate coupling agent to grind on a planetary ball mill to make 10 For powder particles below micron, in ball milling, the mass ratio of ball to material is 20:1, the speed of ball mill is 400r / min, and the ball milling time is set to 12h. Finally, the samples were taken out and dried, and the results were as follows: Figure 1 shown.

[0030] Add titanate coupling agent diluted with isopropanol to the powder after ball milling, wherein the mass of titanate is 1% of the mass of the sample, stir and ultrasonically for 30 minutes, a...

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Abstract

The invention discloses a ThMn12 type soft magnetic material with plane anisotropy and a method for preparing a composite material by the same. The ThMn12 type soft magnetic material can maintain high magnetic conductivity as well as wide resonance frequency in high frequency (which is not less than 1 GHz) and can realize electromagnetic shielding in a large frequency range and signal noise reduction at the same time. The ThMn12 type soft magnetic material comprises the following materials in percentage by weight: 15-24 percent of rare earth elements, 60-85 percent of iron or / and cobalt, and 3-14 percent of anyone element of vanadium or molybdenum or titanium or any combination of two elements; and the ThMn12 type soft magnetic material is alloy powder with easy magnetization direction vertical to a C axis.

Description

technical field [0001] The invention relates to a high-frequency soft magnetic material and a method for preparing a composite material prepared from the material. The material of the invention is a ThMn12 type rare earth magnetic material with plane anisotropy. Background technique [0002] Most of the high-frequency soft magnetic materials in the prior art are ferrite materials, as disclosed in Chinese invention patent 01120531.8. In the prior art, rare-earth iron-based soft magnetic metallic glass is also used, such as the content disclosed in the Chinese invention patent 02104348.5; the Chinese invention patent 99124006.5 discloses that in the Fe-Co-Ni alloy system, the chemical near the α-γ phase boundary is selected. Composition, and add appropriate amount of alloying elements Nb and rare earth, vacuum smelting, casting and molding, and adopt the method of two heat treatments to obtain a double ferromagnetic phase soft magnetic alloy with α phase as the main crystal p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/147C22C38/14C22C38/12C22C38/10C22C19/07C22C30/00C22C1/02B22F9/04
Inventor 李发伸刘忻左文亮伊海波
Owner 惠州市福益乐永磁科技有限公司
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