水气联合雾化制备的低损耗纳米晶软磁粉末  

Low loss nanocrystalline soft magnetic powders prepared by water-gas atomization

作　　者：李鑫 樊子民[1] 乐晨 赵放 唐明强 蔡佳宁 林波 蔡远飞 向明亮 张岩 王军强 LI Xin;FAN Zi-min;LE Chen;ZHAO Fang;TANG Ming-qiang;CAI Jia-ning;LIN Bo;CAI Yuan-fei;XIANG Ming-liang;ZHANG Yan;WANG Jun-qiang(College of Materials Science and Engineering,Xi’an University of Science and Technology,Xi’an 710000,China;TIZ Advanced Alloy Technology Co,Ltd,Quanzhou 362000,China;Ningbo Institute of Materials Technology&Engineering,Chinese Academy of Sciences,Ningbo 315000,China)

机构地区：[1]西安科技大学材料科学与工程学院,陕西西安710000 [2]泉州天智合金材料科技有限公司,福建泉州362000 [3]中国科学院宁波材料技术与工程研究所,浙江宁波315000

出　　处：《磁性材料及器件》2023年第4期43-48,共6页Journal of Magnetic Materials and Devices

摘　　要：基于水气联合雾化工艺制备了纳米晶体系的Fe-Si-B-Cu-Nb合金粉末,其淬态为非晶结构。经过10℃/min升温至560℃、保温1 h的热处理工艺,可获得Fe-Si-B-Cu-Nb均匀的纳米晶结构,其平均晶粒尺寸为15nm。水气联合雾化工艺方法制备的非晶Fe-Si-B-Cu-Nb粉末具有纳米晶化热处理工艺稳定的特点,在退火温度为560℃下制备的Fe-Si-B-Cu-Nb纳米晶粉末的Bs=167.6 emu/g,矫顽力Hc=47.7 A/m。在100 mT条件下具有极低的损耗,Ps=497 mW/cm^(3),且此工艺适用于规模化生产,有望在高频率低损耗电感器领域获得应用。In this paper,the nanocrystalline Fe-Si-B-Cu-Nb alloy powder was prepared by the water-gas atomization process,and its quenched state is amorphous structure simultaneously.When the heating rate is 10℃/min,holding 1 h,the annealing temperature is 560℃,the homogeneous nanocrystalline structure of Fe-Si-B-Cu-Nb was obtained,and the average grain size was 15 nm.The amorphous Fe-Si-B-Cu-Nb powder prepared by water-gas atomization process has the characteristic of nanocrystalline heat treatment process steadily.Among them,the nanocrystalline powder prepared at the annealing temperature of 560℃have excellent comprehensive soft magnetic properties:Bs=167.6 emu/g,Hc=47.7 A/m,under Bm=100 mT,it has exceeding low loss:Ps=497 mW/cm^(3).This process is suitable for large-scale production,which is expected to be applied in the industrial production of high frequency and low loss inductors.

关 键 词：Fe-Si-B-Cu-Nb纳米晶合金粉末 热处理 水气联合雾化法 损耗 

分 类 号：TM271.2[一般工业技术—材料科学与工程] TG132.27[电气工程—电工理论与新技术]