Fabrication of SmCo5 alloy via cobalt-induced calciothermic reduction and magnetic properties of its ribbon
Fabrication of SmCo5 alloy via cobalt-induced calciothermic reduction and magnetic properties of its ribbon
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钴诱导热还原法制备SmCo5合金及其带材的磁性能
DOI：
10.1016/j.jre.2020.06.009
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发表时间：
2020-06
影响因子：
4.9
通讯作者：
Yang Youming
中科院分区：
文献类型：
--
作者：
Liu Donghui;Niu Fei;Zhang Xiaolin;Meng Yuning;Yang Youming
SmCo_5 alloy was prepared via direct calciothermic reduction using anhydrous samarium fluoride (SmF_3) as raw material and cobalt as inducer. Results of the thermodynamic calculation show that the direct reduction of cobalt-induced SmF_3 for preparing SmCo_5 alloy is feasible. An alloy with 33.89 wt% samarium and a yield of 96.45% were achieved under the optimal conditions of 10% and 20% excess of SmF_3 and calcium over the stoichiometry, respectively, and 1450 °C for 4 min. The X-ray diffraction results show that the reduction products are SmCo_5 alloy and CaF_2. The scanning electron microscopy micrograph of the SmCo_5 alloy ingot exhibits a distinct dendritic morphology composed of samarium and cobalt The X-ray photoelectron spectroscopy shows that the atomic ratio of samarium to cobalt is approximately 1:5 and both elements demonstrate zero valency (Sm~0, Co~0). The magnetic properties measurement of the SmCo_5 alloy melt-spun ribbon shows the remanent magnetization BΓ = 0.59 T, intrinsic coercivity Hci = 345.82 kA/m and maximum magnetic energy density (BH)max = 42.20 kj/m~3. These results may be helpful for the development of novel valence-variable rare-earth alloys.
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影响因子：
2.7
作者：
Jianqi Zhang;P. Evans;G. Zangari
通讯作者：
Jianqi Zhang;P. Evans;G. Zangari
富Sm液相对烧结2:17型Sm-Co磁体磁性能和显微组织的影响
影响因子：
4.9
作者：
Zhang Wenchen;Zhao Rui;Fang Yikun;Zhou Mingge;Zhu Minggang;Li Wei
通讯作者：
Li Wei
影响因子：
2.6
作者：
R. Cech
通讯作者：
R. Cech
影响因子：
1.5
作者：
T. Ojima;S. Tomizawa;T. Yoneyama;T. Hori
通讯作者：
T. Ojima;S. Tomizawa;T. Yoneyama;T. Hori
影响因子：
2.7
作者：
S. Aich;J. Shield
通讯作者：
S. Aich;J. Shield