Electrochemical Synthesis of Sm-Co Metal Magnetic Materials by Co-reduction of Sm(III) and Co(II) in LiCl-KCl-SmCl3-CoCl2 Melt

Liu Yu-Hui; Yan Yong-De; Zhang Mi-Lin; Liang Yuan; Qu Jia-Miao; Peng-Lia; Ji De-Bin; Xue Yun; Jing Xiao-Yan; Han Wei

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Electrochemical Synthesis of Sm-Co Metal Magnetic Materials by Co-reduction of Sm(III) and Co(II) in LiCl-KCl-SmCl3-CoCl2 Melt

机译：通过CONGL-KCl-SMCL3-COCL2熔体共减量SM-CO金属磁性材料的电化学合成SM-CO金属磁性材料的电化学合成SM（III）和CO（II）

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High magnetism and magnetization intensity are required for preparing rare-earth-based single-crystal flaky magnetic intermetallic compound materials. Herein, we report high coercivity Sm-Co (Sm2Co17, SmCo5, Sm2Co7, SmCo3, and SmCo2) intermetallic compounds, which have been synthesized by electrochemical synthesis in LiCl-KCl-SmCl3-CoCl2 melt. The electrochemical co-reduction behaviors of Sm(III) and Co(II) ions, and the formation of intermetallic compounds in the melt were investigated by cyclic voltammetry (CV), square wave voltammetry (SWV) and open-circuit chronopotentiometry techniques (OCP), respectively. The crystal nature of Sm-Co intermetallic compounds was characterized by X-ray diffraction (XRD), selected area electron diffraction (SAED), high-resolution transmission electron microscopy (HRTEM) and Fast Fourier transform analysis (FFTs) method. At the same time, multilayer planar structure of Sm-Co intermetallic compounds was investigated by transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). The results showed that as the mass percentage of SmCl3 changed from 0 to 12 wt.%, the phase of Sm-Co intermetallic compounds transferred from Co-rich side to Sm-rich side, and the crystal structures were found to be single-crystal ones. The valence bands and core levels of Sm-Co intermetallic compounds were evolved in the crystal growth process. A structural change in the core levels Sm 3d and Co 2p during the course of transition from pure components to intermetallic compounds occurred, which could be explained by the hybridization of f and d electrons of samarium and cobalt. The results of Sm-Co intermetallic compounds for vibrating sample magnetometer (VSM) test showed that the magnetic densities of Sm2Co17 and SmCo5 were 157 emu/g and 145 emu/g, respectively. (C) 2017 Elsevier Ltd. All rights reserved.

机译：高磁和磁化强度是必需的用于制备基于稀土单晶薄片状磁性金属间化合物材料。在本文中，我们报道了高矫顽力钐钴（Sm2Co17，的SmCo5，Sm2Co7，SmCo3和SmCo2）金属间化合物，其已通过电化学合成中的LiCl-KCl的-SmCl3-氯化钴合成了熔化。钐（III）和Co（II）离子，以及在熔融金属间化合物的形成所述的电化学共还原行为进行了通过循环伏安法（CV），方波伏安法（SWV）和开路计时技术（OCP调查），分别。 Sm-Co类金属间化合物的晶体性质的特点是X射线衍射（XRD），选择区域电子衍射（SAED），高分辨率的透射电子显微镜（HRTEM）和快速傅里叶变换分析（FFT）等方法。与此同时，Sm-Co类金属间化合物的多层平面结构通过透射电子显微镜（TEM）和X射线光电子能谱（XPS）研究。结果表明，作为SmCl3的质量百分含量从0变到12％（重量），从富Co侧传送到富含的Sm侧的Sm-Co金属间化合物的相，并且发现晶体结构是单晶那些。价带和Sm-Co金属间化合物的核心水平晶体生长过程中演化而来的。在核心层的Sm 3D和Co的2p过渡的过程中，以金属间化合物的结构变化从纯组分发生，这可能是f和钐和钴的d电子的杂交进行说明。 Sm-Co类金属间化合物的用于振动样品磁强计的结果（VSM）试验表明，Sm2Co17和的SmCo5的磁密度分别为157鸸鹋/克和145鸸鹋/克。（c）2017 Elsevier Ltd.保留所有权利。

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来源
《Electrochimica Acta》 |2017年第2017期|共12页
作者
Liu Yu-Hui; Yan Yong-De; Zhang Mi-Lin; Liang Yuan; Qu Jia-Miao; Peng-Lia; Ji De-Bin; Xue Yun; Jing Xiao-Yan; Han Wei;
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作者单位

Harbin Engn Univ Coll Mat Sci &

Chem Engn Key Lab Superlight Mat &

Surface Technol Minist Educ Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Mat Sci &

Chem Engn Key Lab Superlight Mat &

Surface Technol Minist Educ Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Mat Sci &

Chem Engn Key Lab Superlight Mat &

Surface Technol Minist Educ Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Mat Sci &

Chem Engn Key Lab Superlight Mat &

Surface Technol Minist Educ Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Mat Sci &

Chem Engn Key Lab Superlight Mat &

Surface Technol Minist Educ Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Mat Sci &

Chem Engn Key Lab Superlight Mat &

Surface Technol Minist Educ Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Mat Sci &

Chem Engn Key Lab Superlight Mat &

Surface Technol Minist Educ Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Fundamental Sci Nucl Safety &

Simulat Technol Lab Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Mat Sci &

Chem Engn Key Lab Superlight Mat &

Surface Technol Minist Educ Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Mat Sci &

Chem Engn Key Lab Superlight Mat &

Surface Technol Minist Educ Harbin 150001 Heilongjiang Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类电化学工业;物理化学（理论化学）、化学物理学;
关键词
LiCl-KCl melt; Co-reduction; Sm-Co intermetallic compounds; Magnetic properties;

机译：LICL-KCL融化;共减少;SM-CO金属间化合物;磁性;

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1. Electrochemical Synthesis of Sm-Co Metal Magnetic Materials by Co-reduction of Sm(III) and Co(II) in LiCl-KCl-SmCl3-CoCl2 Melt [J] . Liu Yu-Hui, Yan Yong-De, Zhang Mi-Lin, Electrochimica Acta . 2017,第期

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Electrochemical Synthesis of Sm-Co Metal Magnetic Materials by Co-reduction of Sm(III) and Co(II) in LiCl-KCl-SmCl3-CoCl2 Melt

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