Ce17Fe78-xB6Mx（M=Cu,Al,Ga;x=0～1.0）快淬合金永磁性能  

Permanent Magnetic Properties of Rapidly Quenched Ce17Fe78-xB6Mx（M=Cu, Al, Ga; x=0～1.0） Alloys

作　　者：江庆政[1] 何伦可 Sajjad Ur Rehman 宋杰 欧阳涵 钟震晨[1] Jiang Qingzheng;He Lunke;Sajjad Ur Rehman;Song Jie;Ouyang Han;Zhong Zhenchen(Jiangxi Key Laboratory for Rare Earth Magnetic Materials and Devices,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学江西省稀土磁性材料及器件重点实验室

出　　处：《稀有金属材料与工程》2019年第11期3686-3692,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51564037,51661011);江西省教育厅青年基金项目(GJJ180472)

摘　　要：基于熔体快淬技术,研究了低熔点元素Cu、Al和Ga添加对Ce17Fe78B6合金磁性能的影响。结果表明,三类低熔点元素的加入,均降低了合金的磁化强度,而矫顽力有一定程度的提升。其中,Cu和Ga元素添加可优化晶粒尺寸分布,且Ga添加对Ce17Fe78B6合金矫顽力的提升最为有效。Ce17Fe78B6合金回复曲线轻微开口;当Ga添加量为0.75%(原子分数)时,合金具有较优异的综合磁性能,回复曲线完全闭合。适量Ga元素添加明显增强了Ce-Fe-B基合金晶间短程交换耦合作用,减小了合金平均回复磁导率,有效降低了Ce-Fe-B基合金在周期性反向磁场中的能量损失。The effects of low melting point elements Cu,Al and Ga on the magnetic properties of Ce17Fe78B6 alloys prepared by melt spinning technique were studied.The results show that the addition of these elements decreases the saturation magnetization,while the coercivity increases to a certain extent.Among the additive elements,the additions of Cu and Ga optimize grain size distribution,Ga addition is the most effective way to improve the coercivity of Ce17Fe78B6 alloy.The recoil loop of Ce17Fe78B6 alloy is slightly open.The best overall magnetic properties are obtained for Ce17Fe77.25B6Ga0.75 alloy.Compared with that of Ce-Fe-B alloy,the exchange coupling interaction between the grains of Ce-Fe-B-Ga alloy is enhanced.The recoil loops closes completely and the average recovery permeability decreases,which effectively enhance the resistance of Ce-Fe-B based alloys to external magnetic field interference.

关 键 词：CeFeB合金 磁性能 交换耦合作用 回复曲线 

分 类 号：TM273[一般工业技术—材料科学与工程]