The microstructure and magnetic characteristics of Sm(CobalFe0.1Cu0.09Zr0.03)7.24 high temperature permanent magnets

被引：63
作者：
Yu, Nengjun [1 ,2 ,3 ]
Zhu, Minggang [1 ]
Fang, Yikun [1 ]
Song, Liwei [1 ,2 ,3 ]
Sun, Wei [1 ]
Song, KuiKui
Wang, Q. [2 ]
Li, Wei [1 ]
机构：
[1] Cent Iron & Steel Res Inst, Div Funct Mat, Beijing 100081, Peoples R China
[2] Northeastern Univ, Key Lab, Natl Educ Minist Electromagnet Proc Mat, Shenyang 110819, Peoples R China
[3] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
来源：
SCRIPTA MATERIALIA | 2017年 / 132卷
基金：
中国国家自然科学基金;
关键词：
SmCo-based magnets; High temperature magnets; Magnetic properties; Element distribution; COERCIVITY;
D O I：
10.1016/j.scriptamat.2017.01.026
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Two kinds of Sm(CobalFe0.1Cu0.09Zr0.03)(7.24) high temperature magnets were fabricated by a traditional powder metallurgical technology with different annealing processes. A record of maximum energy product of 94.73 kJ/m(3) at 773 K with a high intrinsic coercivity of 652.72 kA/m was made. Based on the theoretical and experimental results, it was found that the temperature coefficient of the coercivity was strongly influenced by the variation of the Curie temperature of the cell wall phases and the domain wall energy ratio between cell and cell wall phases at 0 K. The characteristic properties originate from the element redistribution between SmCo5/Sm2Co17 interfaces while annealing. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：44 / 48
页数：5
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