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CN-122025327-A - Soft magnetic alloy material and preparation method and application thereof

CN122025327ACN 122025327 ACN122025327 ACN 122025327ACN-122025327-A

Abstract

The invention provides a soft magnetic alloy material, a preparation method and application thereof, and relates to the technical field of soft magnetic alloy. Specifically, the chemical formula of the soft magnetic alloy material is Y 2 Fe 17‑x Me x , me comprises at least one of Mn, cr, co, ni, x is more than or equal to 1 and less than or equal to 16, and the soft magnetic alloy material is obtained after preparing a metal raw material, repeatedly smelting for 3-5 times in a protective gas environment and cooling. The invention carries out doping of specific element types on the basis of the conventional R 2 M 17 type alloy material, obviously improves the Curie temperature of the soft magnetic alloy material, can be suitable for use in a higher temperature environment, and has good application prospect.

Inventors

  • WANG HAN
  • SUN WEI
  • WANG JIQUAN
  • ZHANG PENGJIE

Assignees

  • 北矿磁材（阜阳）有限公司

Dates

Publication Date
20260512
Application Date
20260211

Claims (10)

  1. 1. A soft magnetic alloy material is characterized in that the chemical formula of the soft magnetic alloy material is Y 2 Fe 17-x Me x , me comprises at least one of Mn, cr, co, ni, and x is more than or equal to 1 and less than or equal to 16.
  2. 2. The soft magnetic alloy material according to claim 1, wherein the curie temperature of the soft magnetic alloy material is 500k to 900k.
  3. 3. The soft magnetic alloy material according to claim 1, wherein Me is at least one of Mn, cr, co, ni, and the soft magnetic alloy material does not contain a metal element other than the chemical formula.
  4. 4. A method for producing the soft magnetic alloy material according to any one of claims 1 to 3, comprising: Preparing a metal raw material, placing the metal raw material in a vacuum arc furnace, repeatedly smelting for 3-5 times in a protective gas environment, and cooling to obtain the soft magnetic alloy material.
  5. 5. The method according to claim 4, wherein the ratio of the molar amount of the yttrium element to the theoretical molar amount of yttrium is (1.05 to 1.08): 1.
  6. 6. The method according to claim 4, wherein the purity of yttrium simple substance raw material is not less than 99.5% and the purity of transition metal raw material is not less than 99.9%.
  7. 7. The method according to claim 4, wherein the current of the vacuum arc furnace is 20a to 100a.
  8. 8. The method according to claim 4, wherein each heating time of the vacuum arc furnace is independently 2 to 5 minutes.
  9. 9. The method according to claim 4, wherein the current change speed of the vacuum arc furnace is 20A/min to 25A/min.
  10. 10. A wave absorbing material comprising the soft magnetic alloy material according to any one of claims 1 to 3.

Description

Soft magnetic alloy material and preparation method and application thereof Technical Field The invention relates to the technical field of soft magnetic alloy, in particular to a soft magnetic alloy material and a preparation method and application thereof. Background The R 2M17 type compound material is a magnetic material formed by rare earth elements and transition metals, wherein R represents rare earth elements such as samarium (Sm), neodymium (Nd), praseodymium (Pr), cerium (Ce) and the like, M represents transition metals, and the main stream is iron (Fe). The R 2M17 type material has high saturation magnetization and magnetocrystalline plane anisotropy, and has obvious advantages in breaking through Snoek limit and high-frequency magnetic loss capacity. However, most R 2M17 compounds have soft magnetic material characteristics under normal conditions, and further show a very low Curie temperature (240K-480K), which is disadvantageous in practical application. Therefore, research on how to raise the curie temperature of such materials is a problem to be solved. In the prior art, related researches on rare earth-iron-based soft magnetic wave absorbing materials are few, and most of domestic related patents are focused on products or preparation aspects of the rare earth-iron-based soft magnetic materials. For example, patent CN116435084a discloses a method for preparing rare earth soft magnetic composite material at hundred megahertz frequency, preparing Y 2Co17 block by reducing and then diffusion sintering, crushing, further ball milling and mixing with epoxy resin to obtain rare earth soft magnetic material. For another example, patent CN109732078B discloses an electromagnetic wave absorber of iron-based nanocrystalline magnetically soft alloy micropowder, wherein the component expression of the alloy micropowder is Fe aSibBcCudMe, and M is one or more of Al, cr, co, ni, P and C. For another example, patent CN110047637B discloses a 2:17 rare earth-iron-nitrogen composite magnetic material for high frequency, which is suitable for electromagnetic wave absorbing and shielding materials for high frequency such as electronic devices and electronic equipments functioning at 1GHz and above, and has the characteristics of high permeability and low eddy current loss. In summary, although the prior art shows excellent wave-absorbing performance, no report has been made regarding the improvement in curie temperature for rare earth-iron-based soft magnetic wave-absorbing materials. In view of this, the present invention has been made. Disclosure of Invention The first object of the present invention is to provide a soft magnetic alloy material, which is used for solving the defect of low curie temperature of the existing R 2M17 type soft magnetic wave-absorbing material. The second aim of the invention is to provide a preparation method of the soft magnetic alloy material, which is simple and easy to implement and easy to popularize. A third object of the present invention is to provide a wave-absorbing material. In order to achieve the above object of the present invention, the following technical solutions are specifically adopted: A soft magnetic alloy material has a chemical formula of Y2Fe 17-xMex, wherein Me comprises at least one of Mn, cr, co, ni, and x is more than or equal to 1 and less than or equal to 16. In one embodiment, the curie temperature of the soft magnetic alloy material is 500k to 900k. In one embodiment, me is at least one of Mn, cr, co, ni and the soft magnetic alloy material does not contain metallic elements other than the formulas. A preparation method of the soft magnetic alloy material comprises the following steps: Preparing a metal raw material, placing the metal raw material in a vacuum arc furnace, repeatedly smelting for 3-5 times in a protective gas environment, and cooling to obtain the soft magnetic alloy material. In one embodiment, the ratio of the molar amount of the yttrium element to the theoretical molar amount of yttrium is (1.05 to 1.08): 1. In one embodiment, the purity of the elemental yttrium source material is greater than or equal to 99.5% for the metal source material and the purity of the transition metal source material is greater than 99.9%. In one embodiment, the current of the vacuum arc furnace is 20A-100A. In one embodiment, the heating duration of each vacuum arc furnace is independently 2-5 min. In one embodiment, the current change speed of the vacuum arc furnace is 20A/min-25A/min. A wave absorbing material comprises the soft magnetic alloy material. Compared with the prior art, the invention has the beneficial effects that: According to the invention, element doping is successfully realized on the basis of 2:17 type iron-based soft magnetic alloy, at least one element in Mn, cr, co, ni is doped, the obtained soft magnetic alloy material has uniform phase formation, the Curie temperature of the soft magnetic alloy material is obviously improved o