Zr添加对粘结钕铁硼磁粉结构和磁性能的影响  

Effect of Zr doping on the microstructure and magnetic propertiesof NdFeB powder for bonded magnets

作　　者：张稳 张敏刚[1] 李晓飞[1] 曹江平 桂亚强 刘纹赫 赵东阳 郭艳萍[1] 陈峰华[1] ZHANG Wen;ZHANG Min-gang;LI Xiao-fei;CAO Jiang-ping;GUI Ya-qiang;LIU Wen-he;ZHAO Dong-yang;GUOYan-ping;CHEN Feng-hua(Institute of Advanced Materials,College of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Jiangsu Juxin Magnetic Industry Co,Ltd,Haian 226600,China;Thirty-third Institute,China Electronics Technology Group Corporation,Taiyuan 030006,China)

机构地区：[1]太原科技大学材料科学与工程学院先进材料研究所,山西太原030024 [2]江苏巨鑫磁业有限公司,江苏海安226600 [3]中国电子科技集团公司第33研究所,山西太原030006

出　　处：《磁性材料及器件》2019年第1期17-20,共4页Journal of Magnetic Materials and Devices

基　　金：山西先进永磁材料与技术协同创新中心项目(2016-09);山西省研究生联合培养基地人才培养项目(2016JD36);山西省科技创新重点团队资助项目(2013131009);山西省回国留学人员科研资助项目(2013-098; 2016-092);山西省清洁能源与现代交通装备关键材料及基础件学科群研究生教育创新项目

摘　　要：采用熔体快淬工艺制备了未添加Zr和添加Zr的两种复相纳米NdFeB磁粉。研究了Zr元素添加、晶化、磁化及研磨工艺对NdFeB磁粉微观组织结构及磁性能的影响。研究结果表明,Zr元素的添加可以有效抑制α-Fe晶粒的长大,从而达到细化晶粒、增强硬磁相和软磁相之间的交换耦合作用,提高磁粉磁性能的作用。含Zr钕铁硼磁粉最佳磁性能达Br=0.79 T,Hci=801 kA/m,(BH)max=98 kJ/m3。Nanocomposite NdFeB powders with and without Zr doping were prepared by crystallizing the amorphous melt-spun ribbons.Effects of Zr doping,crystallization and magnetizing on the magnetic properties and microstructures of the NdFeB powder have been investigated.It is found that the Zr doping can restrain the formation and growth ofα-Fe,refine grains,enhance exchange coupling interaction between the hard and the soft magnetic phases,and resultantly improve the magnetic properties.Under the optimal condition,the NdFeB powder has the best magnetic properties of Br=0.79 T,Hci=801 kA/m,(BH)max=98 kJ/m^3.

关 键 词：钕铁硼磁粉 Zr添加 结构 磁性能 

分 类 号：TM273[一般工业技术—材料科学与工程]