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Low-cost high-performance sintered neodymium-iron-boron permanent magnet material and preparation process thereof

A permanent magnet material and preparation technology, which is applied in the direction of magnetic material, inductor/transformer/magnet manufacturing, magnetic objects, etc., can solve the problems of high price and limited heavy rare earth resources, and achieve cost reduction, good coercive force, The effect of high coercivity

Active Publication Date: 2021-08-03
安徽吉华新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, heavy rare earth resources are limited and expensive

Method used

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  • Low-cost high-performance sintered neodymium-iron-boron permanent magnet material and preparation process thereof
  • Low-cost high-performance sintered neodymium-iron-boron permanent magnet material and preparation process thereof
  • Low-cost high-performance sintered neodymium-iron-boron permanent magnet material and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of a low-cost and high-performance sintered NdFeB permanent magnet material: the preparation process of the low-cost and high-performance sintered NdFeB permanent magnet material includes the following steps:

[0032] (1) Ingredients: the YCeCo5 type powder is ingredient according to the following atomic ratio, Y 12.50 Ce 4.17 co 77.83 Mo 2.5 Ga 3 ;

[0033] (2) Adopt the ZDL-600 vacuum strip furnace produced by Aifake Vacuum Equipment Co., Ltd., and start to bake the material when the vacuum degree of the smelting belt furnace is less than 3Pa. When the vacuum degree is lower than 5Pa, fill with argon and increase the power to 520KW for smelting. When the metal is completely melted, adjust the power to 500KW for smelting. When the temperature reaches 1430-1450℃, then adjust the water-cooled copper roller speed to 45rpm, control The temperature of the inlet water is 10-15°C to start casting to obtain the flake alloy; the thickness of the prepared flake ...

Embodiment 2

[0043] Preparation of a low-cost and high-performance sintered NdFeB permanent magnet material: the preparation process of the low-cost and high-performance sintered NdFeB permanent magnet material includes the following steps:

[0044] (1) Ingredients: the YCeCo5 type powder is ingredient according to the following atomic ratio, Y 8.34 Ce 8.33 co 69.33 Mo 5.0 Ga 9 ;

[0045] (2) Adopt the ZDL-600 vacuum strip furnace produced by Aifake Vacuum Equipment Co., Ltd., and start to bake the material when the vacuum degree of the smelting belt furnace is less than 3Pa. When the vacuum degree is lower than 5Pa, fill with argon and increase the power to 520KW for smelting. When the metal is completely melted, adjust the power to 500KW for smelting. When the temperature reaches 1430-1450℃, then adjust the water-cooled copper roller speed to 45rpm, control The temperature of the inlet water is 10-15 ℃ to start casting to obtain the flake alloy; the thickness of the prepared flake a...

Embodiment 3

[0055] Preparation of a low-cost and high-performance sintered NdFeB permanent magnet material: the preparation process of the low-cost and high-performance sintered NdFeB permanent magnet material includes the following steps:

[0056] (1) Ingredients: the YCeCo5 type powder is ingredient according to the following atomic ratio, Y 4.17 Ce 12.50 co 69.83 Mo 7.5 Ga 6 ;

[0057] (2) Adopt the ZDL-600 vacuum strip furnace produced by Aifake Vacuum Equipment Co., Ltd., and start to bake the material when the vacuum degree of the smelting belt furnace is less than 3Pa. When the vacuum degree is lower than 5Pa, fill with argon and increase the power to 520KW for smelting. When the metal is completely melted, adjust the power to 500KW for smelting. When the temperature reaches 1430-1450℃, then adjust the water-cooled copper roller speed to 45rpm, control The temperature of the inlet water is 10-15 ℃ to start casting to obtain the flake alloy; the thickness of the prepared flake ...

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Abstract

The invention provides a low-cost and high-performance sintered neodymium-iron-boron permanent magnet material and a preparation process thereof, and relates to the technical field of rare earth magnetic functional materials. The low-cost and high-performance sintered neodymium-iron-boron permanent magnet material is mainly prepared from YCeCo5 type magnetic powder and N38 neodymium-iron-boron magnet powder. The main preparation process comprises the steps of burdening, rapid hardening and sheet casting, hydrogen decrepitation treatment, airflow milling, mixed powder cooling, magnetic field orientation profiling, microwave high-temperature sintering, magnetic field heat treatment and the like. According to the method, the defects in the prior art are overcome, a certain amount of YCeCo5 single-phase micro powder is added into the Nd-Fe-B material, the neodymium-iron-boron magnet has high anisotropy, and therefore the low-cost high-coercivity neodymium-iron-boron magnet is obtained.

Description

technical field [0001] The invention relates to the technical field of rare earth magnetic functional materials, in particular to a low-cost and high-performance sintered NdFeB permanent magnet material and a preparation process thereof. Background technique [0002] Magnetic materials, especially rare earth NdFeB series permanent magnet materials, are the best permanent magnet materials with the best comprehensive performance at present, and have become an indispensable and important material basis in modern industry and science and technology. Among them, sintered NdFeB permanent magnet materials have been rapidly industrialized due to their excellent cost performance, and are widely used in various high-tech fields such as computer hard disk drives, hard disk voice coil motors, motors, generators, nuclear magnetic resonance instruments, audio, and communication equipment. . [0003] As the most representative rare earth permanent magnet material today, the coercivity of ...

Claims

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Application Information

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IPC IPC(8): H01F1/057H01F41/02
CPCH01F1/0576H01F1/0577H01F41/0266H01F41/0273
Inventor 熊吉磊陈敏成丽春刘星周宏亮
Owner 安徽吉华新材料有限公司
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