Production of Sm-Fe-N bulk magnets by spark plasma sintering method

被引：25
|
作者：
Saito, Tetsuji [1 ]
机构：
[1] Chiba Inst Technol, Dept Mech Sci & Engn, Narashino, Chiba 2750016, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 369卷
关键词：
Rare-earth permanent magnets; Spark plasma sintering; Magnetic properties; POWDERS; COMPRESSION; COMPACTION;
D O I：
10.1016/j.jmmm.2014.06.034
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Th2Zn17-type and TbCu7-type Sm-Fe-N powder were consolidated into bulk magnets by the spark plasma sintering (SPS) method. It was found that the coarse TbCu7-type Sm-Fe-N powder possessed greater stability during sintering than the One Th2Zn17-type Sm-Fe-N powder. Although the TbCu7-type magnets produced at temperatures exceeding 773 K showed a low coercivity comparable to that of the Th2Zn17-type magnets, they exhibited a higher coercivity than the Th2Zn17-type magnets when produced at 773 K or lower. The TbCu7-type magnet produced at 773 K exhibited a high remanence of 96.4 Am-2/kg with a high coercivity of 0.72 MA/m. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：184 / 188
页数：5
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