Preparation and Magnetic Properties of Anisotropic SmCo5/Co Composite Particles  

作　　者：Lin Lv Feng-Qing Wang Qiang Zheng Juan Du Xian-Lin Dong Ping Cui J.Ping Liu 

机构地区：[1]CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China [2]School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, China [3]Department of Physics, University of Texas at Arlington, Arlington, TX 76019, USA [4]University of Chinese Academy of Sciences, Beijing 100049, China [5]Shanghai Institute of Ceramics, CAS, Shanghai 200050, China [6]School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China

出　　处：《Acta Metallurgica Sinica(English Letters)》2018年第2期143-147,共5页金属学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China under Grant No. 51422106;the National Basic Research Program of China under Grant No. 2014CB643702;the Ningbo Natural Science Foundation of China under Grant No. 2016A610249;the Scientific and Technological Project of Zhejiang Province under Grant No. 2013TD08;the Ningbo City Scientific and Technological Project under Grant No. 2012B81001;the China Postdoctoral Science Foundation under Grant No. 2016M601989 for financial support

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.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.

关 键 词：NANOCOMPOSITE Permanent magnet COATING NANOSIZE Exchange coupling 

分 类 号：TM27[一般工业技术—材料科学与工程]