High-coercivity SmFe10V2 powder with Sm-rich layers prepared by a reduction-diffusion process

High-coercivity SmFe10V2 powder with Sm-rich layers prepared by a reduction-diffusion process
复制标题

还原扩散法制备富Sm层高矫顽力SmFe10V2粉末

DOI:
10.1016/j.jmmm.2022.169239
复制
发表时间:
2022
影响因子:
2.7
通讯作者:
Sugimoto Satoshi
Sugimoto Satoshi
中科院分区:
材料科学3区
文献类型:
--
作者:
Zhao Luo;Matsuura Masashi;Yamamoto Kuniko;Sugimoto Satoshi

文献摘要

参考文献

被引文献

相似文献

smfe12基粉末优异的本征硬磁性能难以转化为实际应用的外在性能;特别是,由于传统的磁隔离结构(依赖于非磁性晶间相)尚未完善,使得Nd2Fe14B的矫顽力不足,而传统的磁隔离结构是商业Nd2Fe14B体系中产生高矫顽力的关键。在这项研究中,我们提出了一种通过还原-扩散过程实现磁隔离的新方法,使smfe10v2粉末具有非磁性的富钐层。在SmFe10V2powder周围的富sm层的最佳样品具有高矫顽力744.9 kA/m和中等的最大磁化强度61.7 Am2/kg。相表征和微观结构观察表明,smfe10v2的主磁相得到了很好的维持,而周围的富sm层将磁相分离,削弱了邻近磁相之间的铁磁相互作用,从而提高了材料的矫顽力。本研究提出了一种通过引入非磁性层来制备高矫顽力磁粉的新方法。
The remarkable intrinsic hard magnetic properties of SmFe12-based powders are difficult to transform into extrinsic properties for practical applications; in particular, the coercivity is insufficient because the conventional magnetic isolation structure, which relies on nonmagnetic intergranular phases and is critical for inducing high coercivity in commercial Nd2Fe14B systems, has not yet been perfected. In this study, we present a new approach for achieving magnetic isolation with a reduction-diffusion process that endows SmFe10V2powder with nonmagnetic Sm-rich layers. The optimal sample of this Sm-rich layer surrounding SmFe10V2powder has a high coercivity of 744.9 kA/m and a moderate maximum magnetization of 61.7 Am2/kg. Based on phase characterization and microstructure observation, the principal SmFe10V2magnetic phase is well maintained, and the surrounding Sm-rich layers separate the magnetic phases, weakening the ferromagnetic interaction of neighboring magnetic phases and contributing to the high coercivity. Our study presents a new method for developing high-coercivity magnetic powders by introducing nonmagnetic layers.
DOI: 10.1016/j.jmmm.2021.167866
发表时间: 2021
影响因子: 2.7
作者:
A. Srinithi;H. Sepehri;Xin Tang;P. Tozman;J. Li;J. Zhang;S. Kobayashi;T. Ohkubo;T. Nakamura;K. Hono
通讯作者: K. Hono
DOI: 10.2320/matertrans.mt-m2020185
发表时间: 2020
影响因子: 1.2
作者:
Ruka Matsuda;M. Matsuura;N. Tezuka;S. Sugimoto;Ishikawa Takashi;Yoneyama Yukinobu
通讯作者: Yoneyama Yukinobu
各向异性 Sm(Fe,Ti,V)12 基烧结磁体矫顽力的起源
DOI: 10.1016/j.actamat.2021.117161
发表时间: 2021
期刊: Acta Materialia
影响因子: 9.4
作者:
J. Zhang;Xin Tang;H. Sepehri;A. Srinithi;T. Ohkubo;K. Hono
通讯作者: K. Hono
DOI: 10.1016/j.scriptamat.2013.07.011
发表时间: 2013-11-01
期刊: SCRIPTA MATERIALIA
影响因子: 6
作者:
Sepehri-Amin, H.;Liu, J.;Hono, K.
通讯作者: Hono, K.
最小化 Ti 添加量的 (Sm,Gd)Fe12 基化合物的固有磁性能
DOI: 10.1016/j.jallcom.2020.157491
发表时间: 2021
影响因子: 6.2
作者:
P. Tozman;H. Sepehri;T. Ohkubo;K. Hono
通讯作者: K. Hono