热处理工艺对Fe_(75.5)Si_(12.9)B_7Cu_1Nb_(1.8)V_(1.4)Co_(0.4)纳米晶合金高频软磁性能的影响  

Influence of heat treatment process on the high frequency soft magnetic properties of Fe_(75.5)Si_(12.9)B_7Cu_1Nb_(1.8)V_(1.4)Co_(0.4) nanocrystalline alloy

作　　者：曾玉婷 甘章华[1] 吴传栋 倪明 刘静[1] 卢志红[1] 陈雨峰 朱昭峰 ZENG Yuting;GAN Zhanghua;WU Chuandong;NI Ming;LIU Jing;LU Zhihong;CHEN Yufeng;ZHU Zhaofeng(The State Key Laboratory of Refractories and Metallurgy,School of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China;Jiangsu Amorphdnoval Material Technology Company,Yancheng 224000,China)

机构地区：[1]武汉科技大学材料与冶金学院省部共建耐火材料与冶金国家重点实验室,武汉430081 [2]江苏奥玛德新材料科技有限公司,江苏盐城224000

出　　处：《功能材料》2019年第5期5018-5022,5027,共6页Journal of Functional Materials

基　　金：中国博士后基金面上资助项目(2018M642930)

摘　　要：采用单辊熔融旋淬工艺制备了Fe_(75.5)Si_(12.9)B_7Cu_1Nb_(1.8)V_(1.4)Co_(0.4)非晶合金薄带,分析了合金的晶化保温时间(t)、最终退火温度(T_a)和横磁场强度(H)对纳米晶合金高频软磁性能的影响。结果表明,预选定T_a=550℃,当t为150 min时,有效磁导率(μ_e)最高、铁损P_(5/20k)(测试频率f=20 kHz,设定磁感B=0.5 T)和矫顽力(H_c)最低(f<100 kHz),当f=1 kHz时,μ_e=80 900,H_c=3.17 A/m,P_(5/20k)=37.64 W/kg,T_a为530～610℃,对纳米晶合金进行真空普通退火,当T_a分别为550和610℃时,P_(5/20k)有两个谷值,分别为37.64和35.28 W/kg。对于某一特定T_a,随着电流强度I增加,P_(5/20k)呈现先下降再上升的趋势;对于某一特定I,P_(5/20k)在550和610℃均具有谷值。实验发现,当t=150℃,T_a=610℃,I=40 A时,磁芯获得最佳高频软磁性能(P_(5/20k)=20.26 W/kg,B_r=0.3 T)。The Fe 75.5 Si 12.9 B 7 Cu 1 Nb 1.8 V 1.4 Co 0.4 amorphous alloy ribbon was prepared by single-roller melting spin-quenching process. The effects of crystallization holding time ( t ),final annealing temperature ( T a ) and transverse magnetic field strength ( H ) on the high frequency soft magnetic properties of nanocrystalline alloys were analyzed in the current paper. The results indicate that the highest effective magnetic permeability (μ e ),the lowest P 5/20k (the iron loss under frequency ( f ) of 20 kHz,flux density ( B ) of 0.5 T) and the lowest coercivity H c ( f <100 kHz) could be obtained while T a =550 ℃,t =150 min,while f =1 kHz,μ e ,H c and P 5/20k were 80 900 ,3.17 A/m and 37.64 W/kg,respectively. The normal annealing of the nanocrystalline alloys were performed in vacuum at the various T a ranged from 530 to 610 ℃,the lower P 5/20k value of 37.64 and 35.28 W/kg could be achieved at 550 and 610 ℃,respectively. For a specific T a ,the P 5/20K decreased initially and then increased with increasing the direct current I . For a particular I ,the relatively lower P 5/20K of nanocrystalline alloys could be achieved at 550 and 610 ℃. As a result,the optimum high frequency soft magnetic properties ( P 5/20K =20.26 W/kg,B r =0.3 T) of nanocrystalline alloy were obtained while T a,t and I were 610 ℃,150 min and 40 A,respectively.

关 键 词：纳米晶合金 热处理工艺 晶化保温时间 最终退火温度 横磁场强度 高频软磁性能 

分 类 号：TM271[一般工业技术—材料科学与工程]