行星式球磨工艺参数对SmCo_(5)粉体磁性能的影响研究  

Study on the influence of planetary ball mill parameters on magnetic properties of SmCo_(5) powder

作　　者：李奎 安士忠 李邦振 赵金龙 任凤章[1,3,4] LI Kui;AN Shizhong;LI Bangzhen;ZHAO Jinlong;REN Fengzhang(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Longmen Laboratory,Luoyang 471000,China;Henan Provincial Collaborative Innovation Center of Non-ferrous Metals Common Technology,Luoyang 471023,China;Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous MetalNew Materials and Advanced Processing Technology,Luoyang 471023,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]龙门实验室,河南洛阳471000 [3]省部共建有色金属新材料与先进加工技术协同创新中心,河南洛阳471023 [4]河南省有色金属材料科学与加工技术重点实验室,河南洛阳471023

出　　处：《功能材料》2024年第2期2224-2229,共6页Journal of Functional Materials

基　　金：国家自然科学基金项目(51701066);河南省重点研发与推广专项-科技攻关(232102231019);国家级大学生创新创业训练计划项目(202310464008)。

摘　　要：纳米晶SmCo_(5)粉体具有高矫顽力和强磁耦合的优点,是制备纳米复合永磁材料使用最广泛的硬磁材料之一。采用表面活性剂辅助球磨法制备SmCo_(5)微纳米片,采用行星式球磨机,系统研究了球磨时间、球料比和表面活性剂含量对SmCo_(5)粉体的形貌和磁性能的影响。结果表明随着球磨时间和球料比的增加,SmCo_(5)粉末的粒径和厚度减小并转化为微、纳米片,当球磨时间和球料比大于4 h和12∶1后,SmCo_(5)粉末的粒径和厚度变化不明显。选用球料比16∶1、球磨时间2 h、表面活性剂含量30%参数,SmCo_(5)粉体具有最优的磁性能,剩磁(Mr)为45.9 Am^(2)/kg,矫顽力(Hc)为1.13×10^(6) A/m。Nanocrystalline SmCo_(5) powder is one of the most widely used hard magnetic materials for preparing nanocomposite permanent magnets due to its high coercivity and strong magnetic coupling.In this study,surfactant-assisted ball milling was used to prepare SmCo_(5) micro-nanosheets,and the influence of ball milling time,ball-to-powder ratio,and surfactant content on the morphology and magnetic properties of SmCo_(5) powder was systematically investigated using a planetary ball mill.The results showed that with increasing ball milling time and ball-to-powder ratio,the particle size and thickness of SmCo_(5) powder decreased and transformed into micro-nanoflakes.When the ball milling time and ball-to-powder ratio exceeded 4 h and 12∶1,respectively,the particle size and thickness of SmCo_(5) powder did not change significantly.The SmCo_(5) powder exhibited the optimal magnetic property,a remanence of 45.9 Am^(2)/kg and a coercivity of 1.13×10^(6) A/m,when choosing the ball-to-powder ratio of 16∶1,the ball milling time of 2 h,and the surfactant content of 30%.

关 键 词：表面活性剂 行星式球磨 球磨工艺 SmCo_(5)粉体 形貌 磁性能 

分 类 号：TM273[一般工业技术—材料科学与工程]