High performance Sm-Co powders obtained by crystallization from ball milled amorphous state
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第2期
论文作者：Jinkui Fan Qiang Zheng Rui Bao Jianhong Yi Juan Du
文章页码：181 - 184
摘 要：Isotropic Sm-Co nanoparticle powders with high coercivity were prepared by high-energy ball milling followed by optimal annealing at different temperatures. The covercivity increased monotonically with increasing of the annealing temperature and a highest coercivity of 31.2 kOe was obtained. The sample with an optimal energy product of 17.0 MGOe still had a coercivity of 18.2 kOe. The evolution of phase,particle size, mechanism of coercivity and other related magnetic properties were analyzed. The excellent performance is attributed to nanoscale size grains below 15 nm and good exchange coupling between nanoparticles.
Jinkui Fan1,2，Qiang Zheng3，Rui Bao1，Jianhong Yi1，Juan Du2
1. Faculty of Materials Science and Engineering, Kunming University of Science and Technology2. Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences3. School of Materials and Chemical Engineering, Ningbo University of Technology
摘 要：Isotropic Sm-Co nanoparticle powders with high coercivity were prepared by high-energy ball milling followed by optimal annealing at different temperatures. The covercivity increased monotonically with increasing of the annealing temperature and a highest coercivity of 31.2 kOe was obtained. The sample with an optimal energy product of 17.0 MGOe still had a coercivity of 18.2 kOe. The evolution of phase,particle size, mechanism of coercivity and other related magnetic properties were analyzed. The excellent performance is attributed to nanoscale size grains below 15 nm and good exchange coupling between nanoparticles.
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