A kind of neodymium iron boron material and its preparation method and application

A technology of NdFeB content, applied in the fields of magnetic materials, inorganic material magnetism, inductor/transformer/magnet manufacturing, etc. problem, to achieve the effect of uniform magnetic properties, good temperature stability, and improved consistency

Active Publication Date: 2021-08-27
FUJIAN CHANGTING GOLDEN DRAGON RARE EARTH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims at overcoming the need to add a large amount of heavy rare earth elements when the low boron system is used to improve the magnetic properties of the prior art neodymium iron boron materials, and even if the heavy rare earth elements are added, the magnetic properties (remanence, coercivity, temperature stability) properties, squareness) still can not be significantly improved defects, but provides a NdFeB material and its preparation method and application

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  • A kind of neodymium iron boron material and its preparation method and application
  • A kind of neodymium iron boron material and its preparation method and application
  • A kind of neodymium iron boron material and its preparation method and application

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Embodiment Construction

[0143] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples. For the experimental methods that do not specify specific conditions in the following examples, select according to conventional methods and conditions, or according to the product instructions.

[0144] 1. The formulations (wt%) of the raw material compositions of NdFeB materials in Examples 1-16 and Comparative Examples 1-8 are shown in Table 1 below.

[0145] Table 1

[0146]

[0147]

[0148] Note: " / " means not containing this element. wt% is mass percentage.

[0149] 2. The preparation method of the neodymium-iron-boron material of embodiment 1

[0150] The raw materials used in the preparation of NdFeB materials in this example are shown in Table 1, and the preparation process is as follows:

[0151] (1) Melting process: according to the formula shown in Example 1 in Table 1, get the prepared raw materials and p...

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Abstract

The invention discloses a neodymium iron boron material, a preparation method and application thereof. The raw material composition of the NdFeB material includes the following components in mass content: R: 28.5-34%; R is a rare earth element, and R includes Nd; B: 0.84-0.94%; Cu: 0.45%

Description

technical field [0001] The invention specifically relates to a neodymium iron boron material and its preparation method and application. Background technique [0002] NdFeB magnet materials are widely used in electronic products, automobiles, wind power, home appliances, elevators and industrial robots due to their excellent magnetic properties, such as permanent magnets such as hard disks, mobile phones, headphones, and elevator traction machines and generators. As an energy source in motors, its demand is increasing day by day, and the requirements of various manufacturers for magnet properties such as remanence, coercive force performance, temperature stability, and magnet squareness are also gradually increasing. [0003] NdFeB magnet materials are mainly composed of R 2 T 14 The main phase of the B compound and the grain boundary phase located in the grain boundary portion of the main phase are constituted. The R 2 T 14 B compound is a strong magnetic material with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/057H01F1/08H01F41/02
CPCH01F1/057H01F1/08H01F1/086H01F41/02H01F41/0253H01F41/0266
Inventor 付刚胡季帆黄佳莹黄清芳许德钦
Owner FUJIAN CHANGTING GOLDEN DRAGON RARE EARTH CO LTD
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