RARE EARTH PERMANENT MAGNET, AND PREPARATION METHOD THEREFOR

Title:

RARE EARTH PERMANENT MAGNET, AND PREPARATION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2022/143780

Kind Code:

A1

Abstract:

Disclosed are a rare earth permanent magnet, and a preparation method therefor. The rare earth permanent magnet M and the preparation method therefor provided in the present invention may effectively improve the grain boundary anisotropy of the magnet, provide more diffusion channels through which a heavy rare earth diffusion source can enter the inside of the magnet, such that the heavy rare earth diffusion source is more effectively diffused into the magnet, the intrinsic coercivity of the magnet is greatly improved, and a magnet N having high intrinsic coercivity is obtained. Compared with the prior art, under the condition of using the same amount of a heavy rare earth diffusion source, the magnet N having high intrinsic coercivity amplification is obtained in the present invention, and the production costs of the magnet are reduced.

More Like This:

JP2013191610	RARE EARTH PERMANENT MAGNET AND METHOD FOR PRODUCING RARE EARTH PERMANENT MAGNET
JPWO2004003245	Alloys for bonded magnets, isotropic magnet powders and anisotropic magnet powders, their manufacturing methods, and bonded magnets
JP4754739	Alloy ingots for rare earth magnets, their manufacturing methods and sintered magnets

Inventors:

LI ZHIQIANG (CN)
WANG CONG (CN)
WANG PENGFEI (CN)
WEI RUI (CN)

Application Number:

PCT/CN2021/142528

Publication Date:

July 07, 2022

Filing Date:

December 29, 2021

Export Citation:

Click for automatic bibliography generation Help

Assignee:

YANTAI ZHENGHAI MAGNETIC MAT CO LTD (CN)
JIANGHUA ZHENGHAI MINMETALS ADVANCED MAT CO LTD (CN)

International Classes:

H01F1/057; H01F1/055; H01F41/02

Foreign References:

CN112768170A	2021-05-07
CN104715877A	2015-06-17
CN112008075A	2020-12-01
CN105469973A	2016-04-06
CN110444386A	2019-11-12
US20170221630A1	2017-08-03
CN202011628718A	2020-12-30
CN104159685A	2014-11-19
CN105261473A	2016-01-20
CN1306527C	2007-03-21
JPH091296A	1997-01-07

Other References:

ACTA MATERIALIA, vol. 112, 2016, pages 59 - 66

Attorney, Agent or Firm:

BEIJING ORIGINTELLIGENCE IP LAW FIRM (CN)

Download PDF:

View/Download PDF PDF Help

Previous Patent: ALKENYL-CONTAINING COMPOUND AND APPLICATION THEREOF

Next Patent: STRUCTURED EMULSION