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A kind of alloy magnetic material and preparation method thereof

A technology of magnetic materials and alloys, applied in the field of alloy magnetic materials and their preparation, can solve the problems of poor magnetic properties of high-performance cast NdFeB magnets, cumbersome preparation methods, high material costs, etc., and achieve good magnetic properties and process Simple, low material cost effect

Active Publication Date: 2015-10-21
江苏禾一电热材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high-performance cast NdFeB magnet has poor magnetic properties and high material cost; its preparation method is cumbersome and costly

Method used

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  • A kind of alloy magnetic material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The weight percentage of each component of the alloy magnetic material is Nd 29%, Cu 0.9%, Al 0.9%, Nb 0.06%, Co 0.1%, Ce 0.9%, B 0.9%, Dy 2%, and the rest Fe. Its preparation method is as follows:

[0034] (1) Dosing according to the composition of the alloy magnetic material:

[0035] The purity of Nd, Co, Ce, Dy and Fe in the raw materials of said batching A is all greater than 99.5%; B is added in the form of Fe-B alloy, wherein the weight percentage of B is 20%; Nb is in the form of Nb-Fe alloy The mode is added, wherein the weight percentage of Nb is 66%;

[0036] The raw materials of the batching B are copper powder and aluminum powder, the purity of the copper powder and aluminum powder is greater than 99.5%, and the diameter is 40-50 microns; the weight of the aluminum powder and pure copper powder The ratio is 1:1.

[0037] (2) Preparation of ferroalloy powder:

[0038] Put ingredient A into an induction furnace to melt to obtain an alloy ingot, and the me...

Embodiment 2

[0047] The weight percentage of each component of the alloy magnetic material is Nd 33%, Cu 1.3%, Al 1.3%, Nb 0.08%, Co 0.2%, Ce 1.2%, B 1.2%, Dy 6%, and the rest Fe.

[0048] (1) Dosing according to the composition of the alloy magnetic material:

[0049]The purity of Nd, Co, Ce, Dy and Fe in the raw materials of said batching A is all greater than 99.5%; B is added in the form of Fe-B alloy, wherein the weight percentage of B is 20%; Nb is in the form of Nb-Fe alloy The mode is added, wherein the weight percentage of Nb is 66%;

[0050] The raw materials of the batching B are copper powder and aluminum powder, the purity of the copper powder and aluminum powder is greater than 99.5%, and the diameter is 40-50 microns; the weight of the aluminum powder and pure copper powder The ratio is 1:1.

[0051] (2) Preparation of ferroalloy powder:

[0052] Put ingredient A into an induction furnace to melt to obtain an alloy ingot, and the melting temperature is 1515°C;

[0053] c...

Embodiment 3

[0061] The weight percent of each component of the alloy magnetic material is Nd 31%, Cu 1%, Al 1%, Nb 0.07%, Co 0.15%, Ce 1%, B 1%, Dy 4%, and the rest Fe.

[0062] (1) Dosing according to the composition of the alloy magnetic material:

[0063] The purity of Nd, Co, Ce, Dy and Fe in the raw materials of said batching A is all greater than 99.5%; B is added in the form of Fe-B alloy, wherein the weight percentage of B is 20%; Nb is in the form of Nb-Fe alloy The mode is added, wherein the weight percentage of Nb is 66%;

[0064] The raw materials of the batching B are copper powder and aluminum powder, the purity of the copper powder and aluminum powder is greater than 99.5%, and the diameter is 40-50 microns; the weight of the aluminum powder and pure copper powder The ratio is 1:1.

[0065] (2) Preparation of ferroalloy powder:

[0066] Put ingredient A into an induction furnace to melt to obtain an alloy ingot, and the melting temperature is 1530°C;

[0067] cooling th...

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Abstract

The invention provides an alloy magnetic material and a preparation method thereof, and belongs to the field of metal materials. The alloy magnetic material comprises the following components in percentage by weight: 29 to 33 percent of Nd, 0.9 to 1.3 percent of Cu, 0.9 to 1.3 percent of Al, 0.06 to 0.08 percent of Nb, 0.1 to 0.2 percent of Co, 0.9 to 1.2 percent of Ce, 0.9 to 1.2 percent of B, 2 to 6 percent of Dy and the balance of Fe. The preparation method comprises the following steps of: proportioning the components of the alloy magnetic material, preparing iron alloy powder, preparing composite aluminum-copper alloy powder, mixing the iron alloy powder and the composite aluminum-copper alloy powder, forming by using a highly-oriented magnetic field, performing cold isostatic pressing, performing vacuum high temperature sintering, performing double tempering to obtain the alloy magnetic material. The alloy magnetic material is high in magnetic property and low in material cost; and the preparation method for the alloy magnetic material is simple, low in production cost, safely operated and suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to an alloy magnetic material and a preparation method thereof. Background technique [0002] The invention patent application with the application number 201210111095.5 discloses a method for preparing a high-performance cast NdFeB magnet. The high-performance cast NdFeB magnet is a magnet with medium rare earth content, and the atomic percentage of its composition is Nd a R b Fe 100-a-b-c-d B c m d , where 12≤a+b≤16, 0.1≤b≤5, 5≤c≤6.5, 0.1≤d≤4, R is one or more of Pr, Dy, Tb, Ho, Gd elements, M is One or more of Al, Cu, Ga, Mg, Zn, Sn, Si, Co, Ni, Nb, Zr, Ti, W, V, Hf elements. The preparation method is a composite process combining casting, large-strain plastic deformation technology and double orientation technology. The specific steps are: 1) Weigh the raw materials of each element according to the magnet composition and mix them; 2) Put the mixed raw materials i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/057C22C38/16B22F3/10
Inventor 张群赵浩峰王玲郑泽昌林莹莹邱奕婷张咏刘光宇张金花陆阳平
Owner 江苏禾一电热材料有限公司
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