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A kind of multiphase magnetic material and its preparation method

A magnetic material and magnetic powder technology, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problems that the material performance does not meet the application requirements, and achieve the suppression of grain growth and coarsening, high residual magnetic polarization, and improved effect of density

Active Publication Date: 2019-08-16
XUZHOU NANFANG YONGCI MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the material does not meet the requirements of some applications

Method used

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  • A kind of multiphase magnetic material and its preparation method
  • A kind of multiphase magnetic material and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of multiphase magnetic material is made of iron-based permanent magnetic powder and soft magnetic powder-Co 3 o 4 Composite powder is sintered; the composition and mass percentage of the iron-based permanent magnet powder material matrix are: Nd 22%, La 5%, B 3.0%, Sn 0.25%, Al 0.20%, and the balance is Fe. The iron-based permanent magnetic powder material matrix is ​​also distributed with 0.1% TiN particles by weight, and the average diameter of the particles is 0.2 microns. Soft Magnetic Powder-Co 3 o 4 The weight ratio of iron-based soft magnetic powder to cobalt oxide powder in the composite powder is 5:1. The weight percent content of each component in the iron-based soft magnetic powder material is: 1% Al, 2% Si, 0.05% Co, 0.01% S, and the rest is Fe. The iron-based permanent magnet powder, soft magnetic powder-Co 3 o 4 The weight ratio of composite powder is 100:6.

[0024] Preparation

[0025] The preparation method of the iron-based permanent mag...

Embodiment 2

[0032] A kind of multiphase magnetic material is made of iron-based permanent magnetic powder and soft magnetic powder-Co 3 o 4 Composite powder is sintered; the composition and mass percentage of the iron-based permanent magnet powder material matrix are: Nd 25%, La 8%, B 5.3%, Sn 0.33%, Al 0.24%, and the balance is Fe. The iron-based permanent magnetic powder material matrix is ​​also distributed with TiN particles with a weight percentage of 0.4%, and the average diameter of the particles is 0.6 microns. Soft Magnetic Powder-Co 3 o 4 The weight ratio of iron-based soft magnetic powder and cobalt oxide powder in the composite powder is 5:3. The weight percent content of each component in the iron-based soft magnetic powder material is: 3% Al, 6% Si, 0.2% Co, 0.05% S, and the rest is Fe. The iron-based permanent magnet powder, soft magnetic powder-Co 3 o 4 The weight ratio of composite powder is 100:8.

[0033] Preparation

[0034] The preparation method of the iron-b...

Embodiment 3

[0040] A kind of multiphase magnetic material is made of iron-based permanent magnetic powder and soft magnetic powder-Co 3 o 4 Composite powder is sintered; the composition and mass percentage of the iron-based permanent magnet powder material matrix are: Nd 23%, La 7%, B 4%, Sn 0.28%, Al 0.22%, and the balance is Fe. The iron-based permanent magnetic powder material matrix is ​​also distributed with TiN particles with a weight percentage of 0.3%, and the average diameter of the particles is 0.4 microns. Soft Magnetic Powder-Co 3 o 4 The weight ratio of iron-based soft magnetic powder and cobalt oxide powder in the composite powder is 5:2. The weight percent content of each component in the iron-based soft magnetic powder material is: 2% Al, 4% Si, 0.1% Co, 0.03% S, and the rest is Fe. The iron-based permanent magnet powder, soft magnetic powder-Co 3 o 4 The weight ratio of composite powder is 100:7.

[0041] Preparation

[0042] The preparation method of the iron-bas...

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Abstract

The invention discloses a complex phase magnetic material and a preparation method therefor. The complex phase magnetic material is prepared from iron-based permanent magnet powder and soft magnetic powder-Co<3>O<4> composite powder in a sintering manner; the iron-based permanent magnet powder material base comprises the following components based on mass percentages: 22-25% of Nd, 5-8% of La, 3.0-5.3% of B, 0.25-0.33% of Sn, 0.20-0.24% of Al, and the balance of Fe; and 0.1-0.4% of TiN micro particles are also distributed on the iron-based permanent magnet powder material base. The complex phase magnetic material provided by the invention has high remnant magnetic polarization strength, high density and high magnetic energy product; by comparison with a test result in the embodiment, it is found that the magnetic performance of the complex phase magnetic material is related to the mass percentages of each component; and the preparation method for the complex phase magnetic material is free of an excess of rare and noble materials, and is low in cost, simple in process, convenient to operate, and suitable for popularization.

Description

technical field [0001] The invention belongs to the field of functional composite materials, and in particular relates to a multiphase magnetic material and a preparation method. Background technique [0002] CN201610671450.2 provides a preparation method of nanocomposite rare earth permanent magnet material, comprising the following steps: providing amorphous hard magnetic alloy powder and amorphous soft magnetic alloy powder; crystallizing the amorphous hard magnetic alloy powder into nano Crystalline hard magnetic powder, and crystallization of amorphous soft magnetic alloy powder into nanocrystalline soft magnetic powder; through spark plasma sintering of nanocrystalline hard magnetic powder and nanocrystalline soft magnetic powder, nanocomposite rare earth permanent magnetic materials are obtained. The preparation method of the nanocomposite rare earth permanent magnet material of the present invention can effectively control the mixing ratio of the pre-prepared nanocry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/057H01F1/36H01F41/02C22C38/06C22C38/14C22C38/10B22F9/04B22F1/00
CPCB22F1/0003B22F9/04C22C38/001C22C38/005C22C38/008C22C38/06C22C38/10C22C38/14H01F1/0577H01F1/36H01F41/0266
Inventor 张作州陈斌王立根张丹
Owner XUZHOU NANFANG YONGCI MATERIAL