Title:
METHOD FOR PREPARING SOFT MAGNETIC COMPOSITE MATERIAL WITH HIGH MAGNETIC CONDUCTIVITY AND LOW LOSS, AND MAGNET RING THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/103466
Kind Code:
A1
Abstract:
Disclosed is a method for preparing a soft magnetic composite material with a high magnetic conductivity and a low loss, the method comprising: applying a layer of magnetic oxide particles (2) outside a spherical soft magnetic alloy particle (1), so as to form a mixed powder; charging the mixed powder into a die, such that same is compression molded; applying an external magnetic field to the mixed powder during molding, wherein the magnetic field is parallel to the working magnetic circuit plane and perpendicular to the normal direction of the working magnetic circuit plane; and stress-relieving annealing same to obtain the soft magnetic composite material. The preparation method is very simple and convenient, has no severe requirements for a magnetic powder and the apparatus, and has no need to make major improvements to existing apparatuses, and same can achieve a high performance soft magnetic material which only requires the addition of an external magnetic field application apparatus; soft magnetic alloys and magnetic oxides are non-symmetrically distributed in the horizontal and vertical directions of a magnetic ring, resulting in a higher magnetic conductivity and a lower loss in the direction of a working magnetic circuit; and because less apparatuses, less process steps and a simple process are used, the industrial application of the soft magnetic composite material can be rapidly realized.
Inventors:
PENG XIAOLING (CN)
LI JING (CN)
WANG XINQING (CN)
GE HONGLIANG (CN)
YANG YANTING (CN)
XU JINGCAI (CN)
JIN HONGXIAO (CN)
JIN DINGFENG (CN)
HONG BO (CN)
LI JING (CN)
WANG XINQING (CN)
GE HONGLIANG (CN)
YANG YANTING (CN)
XU JINGCAI (CN)
JIN HONGXIAO (CN)
JIN DINGFENG (CN)
HONG BO (CN)
Application Number:
PCT/CN2020/093242
Publication Date:
June 03, 2021
Filing Date:
May 29, 2020
Export Citation:
Assignee:
UNIV JILIANG CHINA (CN)
International Classes:
H01F1/33; H01F41/02; H01F7/00
Foreign References:
| CN108987025A | 2018-12-11 | |||
| CN110853910A | 2020-02-28 | |||
| CN102136331A | 2011-07-27 | |||
| CN109887698A | 2019-06-14 | |||
| CN106531388A | 2017-03-22 | |||
| US20040061582A1 | 2004-04-01 |
Attorney, Agent or Firm:
HANGZHOU HANGXIN PATENT AGENCY (ORDINARY PARTNERSHIP) (CN)
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