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Nd-Fe-B permanent-magnet material for energy-saving motor and fabrication method of Nd-Fe-B permanent-magnet material

A permanent magnet material, neodymium iron boron technology, applied in the direction of magnetic materials, inorganic material magnetism, magnetic circuit characterized by magnetic materials, etc., can solve the problems of low Curie temperature and cannot be applied, and achieve anisotropic field High, good oxidation resistance and mechanical properties, the effect of improving the scope of application

Inactive Publication Date: 2016-08-10
ANHUI NINGCI ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, NdFeB permanent magnet materials cannot be used in high-temperature environments due to their low Curie temperature. Therefore, it is necessary to change the original material formula to improve the performance of NdFeB permanent magnet materials.

Method used

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Embodiment Construction

[0014] The present invention adopts the following technical solutions to achieve: the NdFeB permanent magnet material for energy-saving motors has the composition shown in the following formula: R1 x R2 y Fe 100-x-y-z-u-v-w co z B u Ga v m w

[0015] Among them, x, y, z, u, v, w are the mass percentage of each element, 32.5%≤x+y≤33%, and 28.5%≤x≤29%; 2%≤z≤2.5%; 0.94%≤ u≤0.98%; 0.1%≤v≤0.15%; 1.18%≤w≤1.7%; R1 is Pr and Nd; R2 is selected from one or more of Ce, Dy, Gd, Tb, Ho; M is selected from Cu , Al, Zr, Nb one or more.

[0016] As a preferred version of the present invention, x+y=33%, x=28.5%, z=2.2%, u=0.98%, v=0.11%, w=1.56%, R2 is Ce, Dy, Gd, Tb, Ho , M is Cu, Al, Zr, Nb.

[0017] As a preferred solution of the present invention, the mass ratio of Pr to Nd of the NdFeB permanent magnet material for energy-saving motors is 1:3.

[0018] The preparation method of the NdFeB permanent magnet material for energy-saving motors comprises the following steps: crushing ...

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Abstract

The invention discloses an Nd-Fe-B permanent-magnet material for an energy-saving motor. The general formula of the molecular formula of the Nd-Fe-B permanent-magnet material is R1<x>R2<y>Fe<100-x-y-z-u-v-w>Co<z>BGa<v>M<w>, and the Nd-Fe-B permanent-magnet material is prepared by smashing, powdering, additive adding, magnetic field oriented compression moulding and sintering and tempering in a protection gas. The Nd-Fe-B permanent-magnet material is relatively reasonable in raw material constituent, and has relatively high coercive force and favorable oxidation resistance and mechanical property, the anisotropic field of the molecular of the prepared permanent-magnet material is relatively high, the Curie temperature reaches 220 DEG C, and the application range is remarkably improved.

Description

technical field [0001] The invention relates to the field of magnetic materials, in particular to an NdFeB permanent magnet material for an energy-saving motor and a preparation method thereof. Background technique [0002] NdFeB permanent magnet material is the latest achievement in the development of rare earth permanent magnet materials. It has excellent magnetic characteristics and is known as the "magnet king". It is widely used in electronic appliances, motors, mechanical equipment, medical care and other fields. However, in the prior art, NdFeB permanent magnet materials cannot be used in high-temperature environments due to their low Curie temperature. Therefore, it is necessary to change the original material formula to improve the performance of NdFeB permanent magnet materials. Contents of the invention [0003] The purpose of the present invention is to solve the above problems, and provides an NdFeB permanent magnet material for an energy-saving motor and a pr...

Claims

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Application Information

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IPC IPC(8): H01F1/057H01F1/08H02K1/02
CPCH01F1/0571H01F1/0575H02K1/02
Inventor 张大鹏
Owner ANHUI NINGCI ELECTRONICS TECH CO LTD
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