徐玉华,朱正吼,赵辉.一种具有良好直流叠加特性的Fe95Si1B2P0.5Cu1.5磁粉芯[J].稀有金属材料与工程,2019,48(2):452~457.[Xu Yuhua,Zhu Zhenghou,Zhao Hui.A Kind of Fe95Si1B2P0.5Cu1.5 Magnetic Powder Core with Optimal DC-bias Property[J].Rare Metal Materials and Engineering,2019,48(2):452~457.]
一种具有良好直流叠加特性的Fe95Si1B2P0.5Cu1.5磁粉芯
投稿时间:2017-08-22  修订日期:2017-11-28
中文关键词:  Fe95Si1B2P0.5Cu1.5磁粉芯  有效磁导率(μe)  直流叠加特性  残余内应力
基金项目:
中文摘要:
      :本文采用片状Fe95Si1B2P0.5Cu1.5合金粉体替代球形Fe-6.5%Si合金粉体,制备了FeSi系金属磁粉芯,研究了合金粉及磁粉芯的制备,退火温度和成型压力对磁粉芯的软磁性能的影响情况。研究结果表明,Fe95Si1B2P0.5Cu1.5磁粉芯的磁导率在1~200kHz频率范围内具有良好的频率稳定性,经450℃×1h退火处理后,磁粉芯内部残余内应力得到充分的释放,其有效磁导率μe得到大幅的提升,成型压力为1.74GPa时,最大值达到53。随着外加直流磁场强度的逐渐变大,磁粉芯的磁导率逐渐下降,当外加直流磁场强度H=50Oe时,有效磁导率μe维持在70%以上,当H继续增大到130Oe时,μe仍大于20,表明磁粉芯具有良好的直流叠加特性。
A Kind of Fe95Si1B2P0.5Cu1.5 Magnetic Powder Core with Optimal DC-bias Property
英文关键词:Fe95Si1B2P0.5Cu1.5 magnetic powder core  Permeability (μe)  DC-bias property  Residual internal stress
英文摘要:
      In this thesis, Fe-Si system metal magnetic powder core was prepared from flaky Fe95Si1B2P0.5Cu1.5 alloy powders instead of the spherical Fe-6.5%Si alloy powders. Firstly, the preparation of Fe95Si1B2P0.5Cu1.5 alloy powders and Fe95Si1B2P0.5Cu1.5 magnetic powder core were studied, and then the influences of annealing temperature and forming pressures on soft magnetic properties of the magnetic powder core were systematically investigated. Research showed that the permeability (μe) of Fe95Si1B2P0.5Cu1.5 magnetic powder core had optimal stability of frequency in the frequency range of 1~200kHz. Residual internal stress produced in the pressing process was fully released after annealing at 450℃ for 1h, which could significantly improve the permeability (μe) of the magnetic powder core, and the maximum value was 53 with a forming pressure of 1.74GPa. With the increase of the applied DC magnetic field level, the permeability of the magnetic powder core decreased gradually. When DC magnetic field levels(H) was 50Oe, the percentage permeability of the magnetic powder core remain higher than 70%, As H increase to 130Oe, the permeability of magnetic powder core was still greater than 20. This showed that Fe95Si1B2P0.5Cu1.5 magnetic power core had optimal DC-bias property.
作者单位E-mail
徐玉华 南昌大学 材料科学与工程学院 ncuzzh519@126.com 
朱正吼 南昌大学 材料科学与工程学院 z00708@sina.com 
赵辉 Institute of Space Science and Technology,Nanchang University,Nanchang ,China  
摘要点击次数: 81
全文下载次数: 54
查看全文  查看/发表评论  
关闭