Structure and Magnetic Properties of Sm2Fe17Nx Sintering Magnets Prepared by Spark Plasma Sintering

被引：1
作者：
张东涛
岳明
张久兴
机构：
[1] China
[2] Beijing University of Technology
[3] Key Laboratory of Advanced Functional Materials Ministry of Education
[4] Beijing 100022
来源：
Journal of Rare Earths | 2006年 / S1期
关键词：
Sm2Fe17Nx; spark plasma sintering; decomposition; magnet; rare earths;
D O I：
暂无
中图分类号：
TM273 [永磁材料、永久磁铁];
学科分类号：
0805 ; 080502 ; 080801 ;
摘要：
Bulk Sm2Fe17Nx sintering magnet was fabricated by spark plasma sintering(SPS) technique. The effects of sintering pressure and sintering temperature on the magnetic properties of the Sm2Fe17Nx magnet were investigated. As a result, the density of the magnet is obviously improved with the increase of sintering pressure, but the coercivity drops since Sm2Fe17Nx has decomposed into SmN,α-Fe and N2. When sintering temperature was only above 200℃under 1 GPa sintering pressure, the coercivity even begins to decrease, which indicates that high pressure promotes the decomposition of the Sm2Fe17Nx at lower temperature. The decomposition is also proved by the decrease of nitrogen and increase ofα-Fe in the magnets.
引用
收藏
页码：325 / 328
页数：4
相关论文
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