Preparation of Nanoscale Sm_2Co_(17)Flakes by Ball Milling in Magnetic Field  

作　　者：Xiao-dong LI Ying CHANG Zhi-yong WEI Guang-yi CHEN Ming-gang ZHU Ling WENG 

机构地区：[1]State Key Laboratory of Structural Analysis for Industrial Equipment,School of Automotive Engineering,Dalian University of Technology [2]Research Institute of Functional Materials,Central Iron and Steel Research Institute [3]Key Laboratory of Electro-magnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology

出　　处：《Journal of Iron and Steel Research International》2014年第5期517-520,共4页

基　　金：Item Sponsored by National Natural Science Foundation of China(50901011,51105059,51201055)

摘　　要：A new preparation method of Sm2Co17 nanoflakes was investigated. Hard magnetic Sm2 Co17 nanoflakes with thickness of 20-100 nm were obtained by milling in heptane and oleic acid under a magnetic field of 1.5 T for 0.5-20 h. It was shown that higher anisotropic magnetic properties would be induced by the flake-shape anisotropy when the prepared Sm2 Colt particles are milled with a magnetic field. The magnetic anisotropy of flakes after being aligned under the magnetic field of 1.5 T could be further enhanced, and the value of （BH）m was 128 kJ · m a Both anisotropy and properties are better than those of the nano-particles milled without a magnetic field.A new preparation method of Sm2Co17 nanoflakes was investigated. Hard magnetic Sm2 Co17 nanoflakes with thickness of 20-100 nm were obtained by milling in heptane and oleic acid under a magnetic field of 1.5 T for 0.5-20 h. It was shown that higher anisotropic magnetic properties would be induced by the flake-shape anisotropy when the prepared Sm2 Colt particles are milled with a magnetic field. The magnetic anisotropy of flakes after being aligned under the magnetic field of 1.5 T could be further enhanced, and the value of （BH）m was 128 kJ · m a Both anisotropy and properties are better than those of the nano-particles milled without a magnetic field.

关 键 词：ANISOTROPY mechanical alloying NANOSTRUCTURE magnetic-field ball milling 2 ： 17 type SmCo alloy 

分 类 号：TF124[冶金工程—粉末冶金] TB383.1[冶金工程—冶金物理化学]