Effects of Solution Treated Temperature on the Structural and Magnetic Properties of Iron-Rich Sm(CoFeCuZr)Z Sintered Magnet
Effects of Solution Treated Temperature on the Structural and Magnetic Properties of Iron-Rich Sm(CoFeCuZr)Z Sintered Magnet
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DOI：
10.1109/tmag.2013.2247576
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发表时间：
2013-07-01
影响因子：
2.1
通讯作者：
Sakurada, Shinya
中科院分区：
文献类型：
--
作者：
Horiuchi, Yosuke;Hagiwara, Masaya;Sakurada, Shinya
系统研究了固溶温度对Sm(cobalt . fe0.35 cu0.06 zr0.018)（7.8）相组成、显微组织和磁性能的影响。Sm2Co7在Sm2O3周围形成，Sm2Co7的体积分数随着固溶温度的降低而增加。在1403 K固溶处理的时效试样中，Sm2Co7相周围出现无细胞结构的区域。因此，发现时效处理过程中Sm2Co7相的析出阻止了细胞结构的形成。磁体矫顽力均小于600 kA/m。另一方面，在1423 K固溶处理时，这些磁体的矫顽力大于1000 kA/m，形成了明显的细胞结构。经1423 K固溶处理，Sm(co . fe0.35 cu0.06 zr0.018)7.8合金的磁性能m -r = 1.22 T, H-eJ = 1011 kA/m。
The effects of solution-treatment temperature on the phase constitution, microstructure and magnetic properties of Sm(Cobal.Fe0.35Cu0.06Zr0.018)(7.8) were investigated systematically. The formation of Sm2Co7 around the Sm2O3 was confirmed and the volume fraction of Sm2Co7 increases with decreasing solution-treatment temperature. An area without cellular structure was observed around the Sm2Co7 phase in aged specimens solution treated at 1403 K. Thus, it was found that precipitation of Sm2Co7 phase prevents the formation of cellular structure during aging treatment. The coercivity of those magnets was less than 600 kA/m. On the other hand, the obvious formation of cellular structure was confirmed in the case of solution treatment at 1423 K and these magnets showed high coercivity of more than 1000 kA/m. The magnetic properties of M-r = 1.22 T and H-eJ = 1011 kA/m have been obtained for Sm(Cobal.Fe0.35Cu0.06Zr0.018)7.8 by solution treatment at 1423 K.