FeCoZrNbB合金的晶化过程及磁性能  

Crystalline processes and magnetic properties of FeCoZrNbB alloys

作　　者：王志英[1,2] 孙亚明[1] 华中[1] 于万秋[1] 

机构地区：[1]吉林师范大学物理学院,四平136000 [2]吉林师范大学分院,四平136000

出　　处：《复合材料学报》2010年第1期139-143,共5页Acta Materiae Compositae Sinica

基　　金：吉林省科技发展计划项目(20082112);吉林省教育厅"十一五"计划项目(2007158)

摘　　要：采用单辊快淬法制备Fe81-xCoxZr7Nb2B10(x=2,4,6)系非晶合金,并对该系非晶合金进行热处理。利用X射线衍射和振动样品磁强计研究FeCoZrNbB合金系的晶化过程和磁性能。结果表明:Fe81-xCoxZr7Nb2B10(x=2,4,6)系合金在快淬速率为30 m/s时完全形成非晶。Fe79Co2Zr7Nb2B10合金的晶化过程为非晶→非晶+α-Fe→α-Fe+Fe3Zr+Fe2Nb0.4Zr0.6;Fe77Co4Zr7Nb2B10与Fe75Co6Zr7Nb2B10合金的晶化过程相同为非晶→非晶+α-Fe→α-Fe+Fe3Zr→α-Fe+Fe3Zr+Fe2Nb0.4Zr0.6。Co含量的增加抑制了退火后α-Fe晶相的形核,并促使Fe3Zr化合物更易析出。Fe81-xCoxZr7Nb2B10(x=2,4,6)合金的比饱和磁化强度(Ms)和矫顽力(Hc)随退火温度的变化趋势相同。530℃之前退火,随退火温度的升高Ms增加并不明显;530℃之后退火,Ms迅速上升。530℃退火,Hc达到最小值;高于530℃退火,Hc随退火温度的升高而增加。Fe81-xCoxZr7Nb2B10（x=2,4,6） amorphous alloys were prepared by single roller melt-spinning and annealed at different temperatures.The crystalline processes and magnetic properties of the alloys were studied by X-ray diffraction and vibrating sample magnetometer.The results show that when quenching speed reaches 30 m/s,Fe81-xCoxZr7Nb2B10（x=2,4,6） amorphous alloys are formed.The crystalline process of Fe79Co2Zr7Nb2B10 is amorphous→amorphous＋α-Fe→α-Fe＋Fe3Zr＋Fe2Nb0.4Zr0.6.The crystalline process of Fe77Co4Zr7Nb2B10 is the same as Fe75Co6Zr7Nb2B10： amorphous→amorphous＋α-Fe→α-Fe＋Fe3Zr→α-Fe＋Fe3Zr＋Fe2Nb0.4Zr0.6.Increasing Co content restrains the nucleation of α-Fe and makes Fe3Zr precipitate easy after annealing.The changing trends of magnetic properties of Fe81-xCoxZr7Nb2B10（x=2,4,6） alloys are the same with increasing annealing temperature.Annealed below 530℃,special saturation magnetization（Ms） changes a little.After 530℃,Ms increases sharply.Annealed at 530℃,coercivity（Hc） reaches the minimum.After 530℃,Hc increases with increasing the annealing temperature.

关 键 词：快淬 非晶 晶化过程 磁性 

分 类 号：TG132.27[一般工业技术—材料科学与工程]