FeSiAl尺寸对纸基复合材料静态及动态磁性能的影响

Effect of FeSiAl Size on Static and Dynamic Magnetic Properties of Paper-based Composites

利用片状FeSiAl和芳纶纤维通过湿法造纸成形技术制备了纸基复合材料(PBCs),探讨了FeSiAl尺寸对PBCs静态及动态磁性能的影响。结果表明,FeSiAl由于造纸工艺成形特点及长宽厚比而呈现独特的层状定向排列结构,导致PBCs具有显著的磁各向异性,其面内外磁滞回线存在明显差异。模拟冲击法结果显示,随着FeSiAl尺寸的增大,PBCs的矫顽力降低,复磁导率得到显著提升。当FeSiAl的平均粒径由14μm增加至116μm时,PBCs的矫顽力由3.47 Oe下降至2.31 Oe,复磁导率由13.55-9.01 j变化至18.04-22.01 j(110 MHz)。

Paper-based composites(PBCs)were prepared by wet papermaking forming technology with FeSiAl sheets and aramid fibers.The effect of FeSiAl size on the static and dynamic magnetic properties of PBCs was discussed.The results showed that FeSiAl exhibited a unique layered arrangement structure due to the wet papermaking forming process and its high aspect ratio,resulting a significant magnetic anisotropy of PBCs,of which the obvious differences existed in in-plane and out-of-plane hysteresis loops.The results of the simulated impact method showed that with the increase of FeSiAl size,the coercivity of PBCs decreased and the complex permeability increased significantly.When the average particle size of FeSiAl increased from 14 μm to 116 μm,the coercivity of PBCs decreased from 3.47 Oe to 2.31Oe,and the complex permeability changed from 13.55~9.01 j to 18.04~22.01 j(110 MHz).