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Magnetic functional material and preparation method thereof

A functional material and magnetic technology, applied in the field of magnetic functional materials and their preparation, can solve the problems of low remanence of magnetic materials and cumbersome process methods, etc., and achieve the goals of improving remanence, simple and easy preparation methods, and increasing Curie temperature Effect

Inactive Publication Date: 2015-12-30
徐州诺派激光技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patent still has the disadvantages that the remanence of the obtained magnetic material is only 13.30-13.33kGS, and the process method is cumbersome.

Method used

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  • Magnetic functional material and preparation method thereof
  • Magnetic functional material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The magnetic functional material includes the following raw materials in terms of mass percentage: Nd18%, Pr5%, Sm8%, Cu1%, Te0.3%, Ni1.2%, Pb1%, B1%, and the rest is Fe; the preparation method is as follows:

[0023] (1) Weigh each raw material according to the mass ratio, put the raw material in a vacuum induction furnace for melting at 1660°C, let it stand for 2 minutes, and cast the obtained alloy liquid to form a cast sheet with a thickness of 1 mm.

[0024] (2) Put the cast piece obtained in step (1) into a hydrogen crushing furnace with a vacuum degree of 0.05 Pa and a furnace pressure of 0.8 atm for hydrogen crushing, and raise the temperature to 100°C, and use the hydrogen absorption characteristics of rare earth intermetallic compounds. The NdFeB alloy is placed in a hydrogen environment. The hydrogen enters the alloy along the thin layer of the Nd-rich phase, causing it to expand, burst and break, and cracks along the Nd-rich phase layer. After 80 minutes, the...

Embodiment 2

[0030] Magnetic functional materials, including the following raw materials in terms of mass percentage: Nd22%, Pr10%, Sm10%, Cu2%, Te0.6%, Ni1.5%, Pb1.5%, B2.5%, and the rest is Fe; preparation Methods as below:

[0031] (1) Weigh each raw material according to the mass ratio, put the raw material in a vacuum induction furnace for melting at 1780°C, let it stand for 4 minutes, and cast the obtained alloy liquid to form a cast sheet with a thickness of 1 mm.

[0032] (2) Put the cast piece obtained in step (1) into a hydrogen crushing furnace with a vacuum degree of 0.1Pa and a furnace pressure of 1.2atm for hydrogen crushing, and heat up to 300°C, using the hydrogen absorption characteristics of rare earth intermetallic compounds. The NdFeB alloy is placed in a hydrogen environment. The hydrogen enters the alloy along the thin layer of the Nd-rich phase, causing it to expand, burst and break, and cracks along the Nd-rich phase layer. After 60 minutes, the cast piece becomes a...

Embodiment 3

[0038] Magnetic functional material, including the following raw materials in terms of mass percentage: Nd19%, Pr8%, Sm9%, Cu1.5%, Te0.4%, Ni1.4%, Pb1.3%, B2%, and the rest Fe; preparation method as follows:

[0039] (1) Weigh each raw material according to the mass ratio, put the raw material in a vacuum induction furnace for melting at 1700°C, let it stand for 3 minutes, and cast the obtained alloy liquid to form a cast sheet with a thickness of 1 mm.

[0040] (2) Put the cast piece obtained in step (1) into a hydrogen crushing furnace with a vacuum degree of 0.05 Pa and a furnace pressure of 1 atm for hydrogen crushing, and raise the temperature to 200°C, and use the hydrogen absorption characteristics of rare earth intermetallic compounds to crush neodymium The iron-boron alloy is placed in a hydrogen environment. The hydrogen enters the alloy along the thin layer of the neodymium-rich phase, causing it to expand, burst and break, and cracks along the neodymium-rich phase ...

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Abstract

A magnetic functional material and a preparation method thereof, the magnetic functional material includes the following raw materials in terms of mass percentage: Nd? 18-22%, Pr? 5-10%, Sm? 8-10%, Cu? 1-2%, Te? 0.3-0.6%, Ni? 1.2-1.5%, Pb? 1-1.5%, B? 1-2.5%, the rest is Fe. Compared with the prior art, the product obtained in the present invention has excellent magnetic properties, and the residual magnetism can reach 15.2kGS; the present invention reduces the usage of rare elements and reduces the cost of raw materials; in addition, in the preparation process of the present invention, the material is passed through Rapid cooling improves the uniformity of its structure and composition, so that the homogenization of material composition and the uniformity of performance are guaranteed; the preparation method of the magnetic functional material of the present invention is simple and easy, and the obtained material has good magnetic properties and is suitable for industrialization Production.

Description

Technical field [0001] The invention is a metal material field, which involves a magnetic functional material and its preparation methods. Background technique [0002] China Patent CN201310046912.8, "Circular Iron Boron Magnetic Material Boiling Materials" revealed a method of sintering and recovery of tin iron boron magnetic materials, including: step 1, tin iron boron magnetic material in vacuum sintering furnace to sinteringTemperature 1000 ℃ -1100 ℃ Thermal insulation for 3-5 hours; step two, fill the inert gas gas quenching to 530 ° C-830 ° C; step three, cool to 450-630 ° C; step 4, once again gas quenching to 80-100 to 80-100° C; the step 3 is natural cooling; step 2 is to fill the inert gas gas gas quenching to 600 ° C-650 ° C; step three is naturally cooled to 480-520 ° C.However, the patent of the patent still has the low magnetic material obtained from only 13.30-13.33kgs, and the process method is tedious. Invention content [0003] The technical problem solved is: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/057C22C38/16C22C33/02
Inventor 蒋晓龙赵浩峰王玲邱奕婷陆阳平王冰柯维雄赵佳玉何晓蕾宋超徐小雪赵圣哲
Owner 徐州诺派激光技术有限公司
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