Fe/FeSiB磁粉芯软磁性能研究  

Study on the soft magnetic property of Fe/FeSiB magnetic core

作　　者：黄伟兵[1] 朱正吼[1] 杨操兵[1] 刘志宾[1] 付远[1] 

机构地区：[1]南昌大学材料科学与工程学院,江西南昌330031

出　　处：《功能材料》2010年第11期2010-2013,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(60961001);江西省科技支撑资助项目(kj200813)

摘　　要：采用模压成型制备FeSiB非晶磁粉芯。并讨论了退火温度和时间、非晶粉体的粒径、不同粒径混合及Fe粉复合量等对磁粉芯磁性能的影响。结果表明,在200～500℃范围内退火,随着退火温度的升高,磁粉芯的μe先增大后减小,375℃时达到最佳,其最佳退火时间为2h。在100kHz～1MHz内,频率稳定性良好,其中心频率在500kHz附近;非晶粉体的粒径越大,磁粉芯的磁性能越好;粉体粒径为60～100目时,其μe达到最大;当粒径为60～100目与100～200目复合时,60～100目的FeSiB非晶粉体含量为60%时最佳。当复合Fe粉后,发现其软磁性能得到了明显改善,Fe粉量为30%时,μe达到32,Q值达到33。FeSiB amorphous magnetic cores were prepared by compression molding.The influence of annealing temperature,annealing time,granularity of amorphous powders,mixed rate of different granularity,the amount of Fe powder added in were investigate to its performance.The results showed that when the cores were annealed from 200 to 500℃,theirμeincreased and then decreased,reached at best at 375℃;the optimal annealing time found was 2h;frequency stability was good at frequency from 100kHz to 1MHz,and its center frequency found was about 500KHz;its performance get better as a increasing granularity of amorphous powders;theμe reached its maximum with the granularity rang from 60 to 100mesh;its performance was best with a 60% of 60 to 100mesh amorphous FeSiB when 60 to 100mesh and 100 to 200mesh amorphous FeSiB were composited;its performance of soft magnetism with Fe composited had improved significantly,theμecould reach at 32 and Qat 33 with 30% Fe.

关 键 词：非晶 磁粉芯 软磁性能 

分 类 号：O482.54[一般工业技术—材料科学与工程] O756[理学—固体物理]