Effects of CE substitution on the microstructures and intrinsic magnetic properties of Nd-Fe-B alloy
Effects of CE substitution on the microstructures and intrinsic magnetic properties of Nd-Fe-B alloy
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DOI：
10.1016/j.jmmm.2015.06.028
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发表时间：
2015-11-01
影响因子：
2.7
通讯作者：
Huang, Xiulian
中科院分区：
文献类型：
--
作者：
Li, Zhi;Liu, Weiqiang;Huang, Xiulian
采用感应熔炼法制备了（Nd 1-xCex）（30）Fe 69 B（x= 0，0.1，0.2，0.3，0.4，0.5，0.6）合金，研究了Ce替代Nd对合金显微组织和内禀磁性能的影响。随着Ce含量的增加，居里温度（Tc）从582.4降低到504.8 K，饱和磁化强度（M-S）从15.88 kGs降低到12.71 kGs，各向异性保持（H-A）从67.4 kOe降低到52.7 kOe。然而，内禀磁性的降低相对温和，并且它们仍然具有制备为永磁体的潜力。此外，进一步的显微组织观察表明，在替代过程中，Ce倾向于扩散到富Nd的晶界相，而不是主相。这种聚集行为有利于制备高M-S的含Ce磁体。(C)2015 Elsevier B. V.版权所有。
(Nd1-xCex)(30)Fe69B (x=0,0.1, 0.2, 0.3, 0.4, 0.5, and 0.6) alloys were prepared by inducting melting, and the effect of substitution of Ce for Nd on their microstructure and intrinsic magnetic properties were investigated. With the increase of Ce content, Curie temperature (T-c) decreases from 582.4 to 504.8 K, saturation magnetization (M-S) decreases from 15.88 to 12.71 kGs, and anisotropy held (H-A) decreases from 67.4 to 52.7 kOe. However, the reductions of the intrinsic magnetic properties are relatively gentle, and they still have potential to be prepared as permanent magnets. Moreover, further microstructure observations show that Ce is tending to diffuse into the Nd-rich grain boundary phase instead of main phase during the substitute process. Such aggregation behavior is beneficial to fabricate Ce containing magnet with high M-S. (C) 2015 Elsevier B.V. All rights reserved.