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
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发表时间:
2022
影响因子:
2.7
通讯作者:
Sugimoto Satoshi
中科院分区:
文献类型:
--
作者:
Zhao Luo;Matsuura Masashi;Yamamoto Kuniko;Sugimoto Satoshi
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.
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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
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
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
影响因子:
6
作者:
Sepehri-Amin, H.;Liu, J.;Hono, K.
通讯作者:
Hono, K.
影响因子:
6.2
作者:
P. Tozman;H. Sepehri;T. Ohkubo;K. Hono
通讯作者:
K. Hono