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A kind of rare earth permanent magnet material and its preparation method and application

A rare earth permanent magnet, rare earth element technology, applied in the direction of magnetic materials, inductance/transformer/magnet manufacturing, magnetic objects, etc. problems, to achieve uniform magnetic properties, improved consistency, and good temperature stability.

Active Publication Date: 2022-05-03
FUJIAN CHANGJIANG 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 to overcome that when the rare earth permanent magnet material of the prior art adopts the low B system to improve the magnetic performance, it usually needs to add a large amount of heavy rare earth elements, 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 rare earth permanent magnet material and its preparation method and application

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  • A kind of rare earth permanent magnet material and its preparation method and application
  • A kind of rare earth permanent magnet material and its preparation method and application
  • A kind of rare earth permanent magnet material and its preparation method and application

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Embodiment Construction

[0150] 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.

[0151] 1. Embodiment 1

[0152] The raw materials used for preparing the rare earth permanent magnet material in the present embodiment are as shown in Table 1, and the process of its preparation is as follows:

[0153] (1) Melting process: according to the formula shown in Example 1 in Table 1, get the prepared raw materials and put them into a crucible made of alumina, and put them in a high-frequency vacuum induction melting furnace at 5 × 10 -2 Vacuum melting is carried out at a temperature below 1500°C in a vacuum of Pa.

[0154] (2) Casting process: Ar gas is introduced into the smelting furnace after vacuum smelting to make th...

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Abstract

The invention discloses a rare earth permanent magnet material, a preparation method and application thereof. The raw material composition of the rare earth permanent magnet material includes the following components: R: 28.5-33%; R is a rare earth element, including Nd; B: 0.84-0.94%; Ga: 0.6

Description

technical field [0001] The invention specifically relates to a rare earth permanent magnet material and its preparation method and application. Background technique [0002] Rare earth permanent 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 magnet motors such as hard disks, mobile phones, headphones, and elevator traction machines and generators As an energy source, etc., its demand is increasing, and the requirements of various manufacturers for magnet properties such as remanence, coercive force performance, temperature stability, and magnet squareness are gradually increasing. [0003] Rare earth permanent 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/057H01F41/02
CPCH01F1/0577H01F41/0253H01F41/0266
Inventor 付刚范宇峰黄清芳兰文辉许德钦
Owner FUJIAN CHANGJIANG GOLDEN DRAGON RARE EARTH CO LTD