Preparation and Magnetic Properties of Anisotropic SmCo5/Co Composite Particles
来源期刊：Acta Metallurgica Sinica2018年第2期
论文作者：Lin Lv Feng-Qing Wang Qiang Zheng Juan Du Xian-Lin Dong Ping Cui J.Ping Liu
文章页码：143 - 147
摘 要：Anisotropic SmCo5/Co nanocomposite powders have been prepared by electroless Co deposition on commercial SmCo5 powders with hydrazine as reducer. The Co particles are mainly in the range of 8–27 nm and form dense/continuous soft magnetic coatings on the surface of SmCo5 powders. Exchange coupling happened between the coated Co soft magnetic particles and the SmCo5 hard phase. As a result, SmCo5/Co nanocomposite powders with remanence of73.58 emu/g and energy product of 13.74 MGOe were obtained in the optimum condition, as compared with those of70.52 emu/g and 13.40 MGOe for uncoated SmCo5 powders. The effects of Co adding amount on Co particle size, coating morphology, and magnetic properties of SmCo5/Co products were investigated.
Lin Lv1,2,3,4，Feng-Qing Wang1，Qiang Zheng5，Juan Du1,2，Xian-Lin Dong2,3，Ping Cui1,2，J.Ping Liu6
1. CAS Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Material Technology and Engineering,Chinese Academy of Sciences2. University of Chinese Academy of Sciences3. Shanghai Institute of Ceramics, CAS4. School of Physical Science and Technology,Shanghai TechUniversity5. School of Materials and Chemical Engineering, Ningbo University of Technology6. Department of Physics, University of Texas at Arlington
摘 要：Anisotropic SmCo5/Co nanocomposite powders have been prepared by electroless Co deposition on commercial SmCo5 powders with hydrazine as reducer. The Co particles are mainly in the range of 8–27 nm and form dense/continuous soft magnetic coatings on the surface of SmCo5 powders. Exchange coupling happened between the coated Co soft magnetic particles and the SmCo5 hard phase. As a result, SmCo5/Co nanocomposite powders with remanence of73.58 emu/g and energy product of 13.74 MGOe were obtained in the optimum condition, as compared with those of70.52 emu/g and 13.40 MGOe for uncoated SmCo5 powders. The effects of Co adding amount on Co particle size, coating morphology, and magnetic properties of SmCo5/Co products were investigated.
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