Study on magnetic properties of Ce17Fe78-xZrxB6 (x=0-2.0) alloys
Study on magnetic properties of Ce17Fe78-xZrxB6 (x=0-2.0) alloys
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Ce17Fe78-xZrxB6(x=0-2.0)合金磁性能研究
DOI：
10.1016/j.jmmm.2015.10.110
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发表时间：
2016
影响因子：
2.7
通讯作者：
Hou X. L.
中科院分区：
文献类型：
--
作者：
Ni B. J.;Xu H.;Tan X. H.;Hou X. L.
为了提高Ce 2Fe 14 B型合金的磁性能，采用熔体快淬法在35 m/s的淬轮速度下合成了Ce 17 Fe 78 − xZrxB 6（x=0 ~ 2.0）。研究了Ce 17 Fe 78 − xZrxB 6（x=0-2.0）合金的晶体结构和硬磁性能。Zr的加入提高了快淬薄带的非晶形成能力和热稳定性。Zr掺杂样品的居里温度低于Ce 2Fe 14 B，表明Zr原子可以直接替代Ce 2Fe 14 B相。X射线衍射数据的细化表明，在最佳退火温度下，随着Zr含量的增加，Ce 17 Fe 78 − xZrxB 6（x=0-2.0）合金的晶格常数和Ce 2Fe 14 B相的体积分数逐渐减小。此外，Ce 2Fe 14 B相的平均晶粒尺寸随着Zr at%从0增加到2.0而逐渐减小。Henkel图分析表明，适量的Zr含量改善了合金的微观结构，增强了交换耦合作用。当x =0.5时，磁性能最佳：iHc= 429.9kA/m，Br= 0.48T，（BH）max= 4.5MGOe。
In order to improve the magnetic performances of Ce2Fe14B-type alloys, Ce17Fe78−xZrxB6(x=0–2.0) were synthesized by a melt spinning method at a quench wheel velocity of 35 m/s. The crystal structure and hard magnetic properties of Ce17Fe78−xZrxB6(x=0–2.0) alloys were investigated. The glass forming ability and thermal stability of as-spun ribbons were improved by Zr addition. Zr-doped samples had lower Curie temperature for Ce2Fe14B, implying that Zr atoms could substitute directly into Ce2Fe14B phase. Refinement of X-ray diffraction data showed that the lattice constants and volume fraction of Ce2Fe14B phase for Ce17Fe78−xZrxB6(x=0–2.0) alloys annealed at optimum temperatures decreased gradually with increasing Zr content. Moreover, the mean grain size of the Ce2Fe14B phase decreased gradually with Zr at% increasing from 0 to 2.0. The analysis of Henkel plots verified that proper Zr content improved the microstructure and enhanced the exchange coupling interaction. Whenx=0.5, the optimum magnetic properties were obtained:iHc=429.9 kA/m,Br=0.48 T and (BH)max=4.5 MGOe.