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A kind of neodymium iron boron magnetic material

A magnetic material, NdFeB technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of difficult to meet the requirements of magnetic performance products, the magnetic performance of NdFeB magnetic materials is not good enough, etc., to achieve good magnetic performance, The effect of high energy product and coercivity

Inactive Publication Date: 2016-06-15
NINGBO LINGKE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the magnetic properties of the NdFeB magnetic materials currently on the market are not good enough, and it is difficult to meet the needs of some products that require high magnetic properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] An embodiment of the present invention provides a neodymium-iron-boron magnetic material, which comprises:

[0020] Neodymium praseodymium: 27-32%;

[0021] Dysprosium iron: 0-5%;

[0022] Gadolinium iron: 0-4%;

[0023] Ferroboron: 5-5.5%;

[0024] Cobalt: 0-2%;

[0025] Gallium: 0-0.3%;

[0026] Aluminum: 0.2-1.4%;

[0027] Copper: 0.1-0.2%;

[0028] Ferroniobium: 0.3-0.5%;

[0029] The balance is iron.

[0030] In one embodiment, the NdFeB magnetic material includes: 27.4% NdPr, 4.6% DyFe, 0.2% FeG, 5.5% FeB, 0.2% Co, 0.25% Ga, 0.2% Al, 0.2% Cu, Ferroniobium 0.33%, the balance is iron.

[0031] In another embodiment, the NdFeB magnetic material includes: praseodymium neodymium 31.9%, dysprosium iron 0.3%, gadolinium iron 3.6%, boron iron 5.1%, cobalt 1.98%, gallium 0.04%, aluminum 1.35%, copper 0.12% , ferroniobium 0.49%, and the balance is iron.

[0032] It should be noted that the above-mentioned NdFeB magnetic material can be formed by sintering to obta...

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PUM

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Abstract

The invention relates to a neodymium iron boron magnetic material, comprising: praseodymium neodymium: 27-32%; dysprosium iron: 0-5%; gadolinium iron: 0-4%; boron iron: 5-5.5%; Cobalt: 0-2%; Gallium: 0-0.3%; Aluminum: 0.2-1.4%; Copper: 0.1-0.2%; Ferroniobium: 0.3-0.5%; The NdFeB magnetic material provided by the invention has higher magnetic energy product and coercive force, better magnetic performance and can meet the requirements of most electronic products.

Description

technical field [0001] The invention belongs to the field of magnetic materials, in particular to a neodymium-iron-boron magnetic material. Background technique [0002] At present, the new material industry, which is the foundation of the high-tech industry, has attracted much attention. As an important part of the new material industry, rare earth permanent magnet materials are widely used in energy, transportation, machinery, medical care, IT, home appliances and other industries. It is one of the important symbols of national strength and national economic development level. In particular, NdFeB, as the third-generation rare earth permanent magnet material, has broad market prospects and is mainly used in computer disk drives, nuclear magnetic resonance imaging instruments, various audio-visual equipment, microwave communications, magnetic machinery, household appliances, etc. At present, the NdFeB industry has also entered a critical period of development. The output ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/057
Inventor 熊军沈孝富
Owner NINGBO LINGKE NEW MATERIAL TECH