添加钴对FeCuNbSiB非晶/纳米晶磁芯软磁性能的影响  

Effect of Co Addition on Soft Magnetic Properties of FeCuNbSiB Amorphous/Nanocrystalline Magnetic Cores

作　　者：李久明 王同帅 刘启瑞 蒋达国[2] LI Jiuming;WANG Tongshuai;LIU Qirui;JIANG Daguo(College of Building Engineering;School of Mathematical Sciences ＆ Physics,Jinggangshan University,Ji＇an 343009,China)

机构地区：[1]井冈山大学建筑工程学院,吉安343009 [2]井冈山大学数理学院,吉安343009

出　　处：《机械工程材料》2018年第10期29-33,共5页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51461020);江西省自然科学基金资助项目(20151BAB202025);江西省教育厅科技资助项目(GJJ150786);江西省原子与分子物理重点学科资助项目(2011-2015)

摘　　要：在Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9合金成分基础上用硅和钴取代硼,采用单辊快淬法制备了Fe_(73.5)Co_(0.3)Cu_1Nb_3Si_(14.2)B_8合金带,将其绕制成环型磁芯后进行不同温度退火处理,研究了钴的添加对合金带晶化行为及其磁芯软磁性能的影响。结果表明:添加钴对合金带的晶化行为没有显著影响,试验合金带为非晶态结构,经550℃退火处理后磁芯为非晶和纳米晶共存的结构;添加钴后,试验合金非晶/纳米晶磁芯的起始磁导率和饱和磁感应强度分别减小了0.149 9H·m^(-1)和388T,矫顽力增大了0.338 5A·m^(-1),直流软磁性能降低;试验合金非晶/纳米晶磁芯在高频(小于100kHz)下的有效幅值磁导率、电感、品质因数均增大,比总损耗和矫顽力均减小,交流软磁性能提高。B was substituted by Si and Co on basis of the composition of Fe（73.5） Cu1 Nb3 Si（13.5） B9 alloy,and then Fe（73.5） Co（0.3） Cu1 Nb3 Si（14.2） B8 alloy strips were prepared by single roll fast quenching method.The tested alloy strips were winded into toroidal magnetic cores,and then these cores were annealed at different temperatures.The influence of Co addition on the crystallization behavior of alloy strips and soft magnetic properties of magnetic cores were studied.The results show that Co addition had little effect on crystallization behavior of alloy strips.The tested alloy strips had an amorphous structure,and the magnetic cores after annealing at 550 ℃ had the co-existence of amorphous and nanocrystalline structures.After addition with Co,the initial permeability and saturation induction density of tested alloy amorphous/nanocrystalline magnetic cores were reduced by 0.149 9 H·m^-1 and 388 T,respectively,while the coercivity increased by 0.338 5 A·m^-1,indicating the direct-current soft magnetic properties decreased.The effective amplitude permeability,inductance and quality factor at high frequencies（less than100 kHz）of tested alloy amorphous/nanocrystalline magnetic cores increased while the total loss density and coercivity decreased,indicating the alternating-current soft magnetic properties were improved.

关 键 词：FeCuNbSiB非晶带材 钴 晶化行为 软磁性能 

分 类 号：TG139.8[一般工业技术—材料科学与工程]