摘要
研究不同叠片厚度TbDyFe合金的动态磁滞特性是设计高频器件的前提和基础。利用AMH-1M-S测量不同叠片厚度TbDyFe合金的动态磁滞回线,获得矫顽力、剩磁、振幅磁导率等磁特性参数,探究其随频率和磁密幅值的变化规律。对磁滞回线面积计算获得材料的磁能损耗,研究叠片厚度对材料磁损耗和磁滞特性的影响。结果表明:当频率为定值时,TbDyFe合金的矫顽力、剩磁和幅值磁导率随磁密的增大呈近似线性增加;当频率升高时,叠片厚度大小对矫顽力、剩磁、幅值磁导率和损耗的影响愈加显著;叠片厚度小的样品其剩磁、矫顽力和损耗值偏小,幅值磁导率值偏大;当f为15kHz、Bm为0.09 T时,1 mm与2 mm厚的样品相比其损耗减小了32.2%。
Study on the dynamic hysteresis properties of TbDyFe alloy laminates with different thicknesses is the basic conditions for designing devices with high frequency. Dynamic hysteresis loops of TbDyFe alloy laminates with different thicknesses were measured by AMH-1 M-S dynamic magnetic characteristic testing system. It is used to analysis the values and the trends of losses and magnetic parameters vary with frequency and magnetic density. The influence of laminate thickness on material losses and hysteresis characteristics were studied. The results show that when frequency is constant,the coercivity,remanence and amplitude permeability of TbDyFe alloy increase linearly with magnetic density. As frequency increases,the effect of the thickness of laminates on coercivity,remanence,amplitude permeability and losses become more significant. The thickness of the laminates is smaller,the remanence, coercivity and losses are smaller, and the larger the permeability is. When f=15 kHz and Bm=0.09 T,the losses of 1 mm thick laminate sample is 32.2% less than that of 2 mm thick laminate sample.
作者
黄文美
吴晓晴
HUANG Wenmei;WU Xiaoqing(State Key Laboratory of Reliability and Intelligence of Electrical Equipment School of Electrical Engineering,Hebei University of Technology,Tianjin 300130,China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province School of Electrical Engineering,Hebei University of Technology,Tianjin 300130,China)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2020年第1期25-29,共5页
Ordnance Material Science and Engineering
基金
国家自然科学基金(51777053)
关键词
TBDYFE合金
叠片结构
高频
动态磁滞特性
幅值磁导率
损耗
TbDyFe alloy
laminated structure
high frequency
dynamic hysteresis properties
amplitude permeability
loss
