Processing YCo_(5) Permanent Magnetic Submicron Flakes by Surfactant-Assisted High-Energy Ball Milling  

作　　者：ZHANG Jing-Jing GAO Hong-Mei YAN Yu BAI Xue WANG Wen-Quan SU Feng DU Xiao-Bo 张京京;高红梅;闫羽;白雪;王文全;苏峰;杜晓波(State key Laboratory for Superhard Materials and Department of Physics,Jilin University,Changchun 130012)

机构地区：[1]State key Laboratory for Superhard Materials and Department of Physics,Jilin University,Changchun 130012

出　　处：《Chinese Physics Letters》2012年第5期213-216,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11174104;the National Fund for Fostering Talents of Basic Science under Grant No J1103202.

摘　　要：YCo_(5) alloy is processed by surfactant-assisted high-energy ball milling. Oleic acid is used as the surfactant and is 20% of the starting powder.The resultant particles are flakes of several microns in length and width,and 20-200nm in thickness. The flakes have significant crystallographic anisotropy and the c-axis (also easy magnetization axes) is perpendicular to the flake's surface. Maximum coercivity of 192kA/m is obtained in the sample milled for 100 min.Excess milling results in the appearance of Fe and deteriorates the permanent magnetic properties seriously.

关 键 词：ALLOY SURFACTANT ANISOTROPY 

分 类 号：TG1[金属学及工艺—金属学]