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1. (WO2018126738) MN-GA ALLOY AND MAGNETIC HARDENING METHOD THEREFOR

Pub. No.:    WO/2018/126738    International Application No.:    PCT/CN2017/103076
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Tue Sep 26 01:59:59 CEST 2017
IPC: H01F 1/147
H01F 41/02
Applicants: BEIJING UNIVERSITY OF TECHNOLOGY
北京工业大学
Inventors: LU, Qingmei
路清梅
YUE, Ming
岳明
LI, Chenhui
李晨辉
ZHANG, Hongguo
张红国
ZHANG, Dongtao
张东涛
Title: MN-GA ALLOY AND MAGNETIC HARDENING METHOD THEREFOR
Abstract:
Disclosed are an Mn-Ga alloy and a magnetic hardening method therefor, belonging to the field of functional materials. The method includes: first obtaining an MnxGa (1.0 ≤ x ≤ 3.0) ingot casting by smelting; subjecting same to a heating treatment at a temperature of 400ºC-650ºC so as to obtain a tetragonal phase; and performing heat deformation on the tetragonal phase alloy block at a temperature of 300ºC-700ºC and a pressure of 30-800 MPa using a spark plasma sintering (SPS) device to obtain a manganese gallium alloy magnet having a relatively large coercivity. The Mn-Ga alloy magnet has relatively high residual magnetism, relatively large coercivity, and a relatively good magnetic energy product, and has application potential in the field of permanent magnetism.