FeSiAl 不规则颗粒在酒精溶剂中球磨，制备得到直径为10μm左右厚度为1μm左右的FeSiAl微米片，然后用硅烷偶联剂对微米片表面进行包裹处理。用电子显微镜和 X 射线光谱仪对包裹和未包裹样品做形貌观测和元素分析，并将样品制备成45%(体积分数)的石蜡复合材料，通过矢量网络分析仪测试其在0.1~18 GHz范围内的电磁参数，发现包裹和未包裹样品的复数磁导率曲线基本重合，但包裹后样品的复数介电常数有很明显的下降。微波传输理论计算表明，包裹后样品在L-S波段具有更优越吸波性能。
The irregular FeSiAl particle was used as a raw material for ball milling with alcohol solvent to pro-duce micron-flakes of the diameter and thickness was about 10 μm and 1 μm,and then used silane coupling agent to package the flakes surface.The morphology and the element content of the packaged sample were in-vestigated with SEM and XPS.The frequency-dependent complex permeability of paraffin composites with 45%volume concentration of flakes was measured using the coaxial line method in 0.1-18 GHz frequency range.Af-ter surface modification the complex permittivity of the packaged composite decreased dramatically in the 0.1-5 GHz frequency range,but the permeability wasn’t found obvious change.The calculated microwave re-flectivities indicated that packaged sample had better absorbing performance than unpackaged sample in L-S fre-quency band.
参考文献
| [1] | Abbas SM;Dixit AK;Chatterjee R;Goel TC .Complex permittivity, complex permeability and microwave absorption properties of ferrite-polymer composites[J].Journal of Magnetism and Magnetic Materials,2007(1):20-24. |
| [2] | Han-Shin Cho;Sung-Soo Kim .M-hexaferrites with planar magnetic anisotropy and their application to high-frequency microwave absorbers[J].IEEE Transactions on Magnetics,1999(5):3151-3153. |
| [3] | Li Z W;Lin G Q;Kong L B .Microwave reflection char-acteristics of Co2 Z barium ferrite composites with various volume concentration[J].IEEE Transactions on Magnetics,2008,44(10):2255-2261. |
| [4] | Naito Y;Suetake K .Application of ferrite to electromag-netic wave absorber and its characteristics[J].IEEE Transactions on Microwave Theory and Techniques,1971,19(01):65-72. |
| [5] | Zhou, C.;Fang, Q.;Yan, F.;Wang, W.;Wu, K.;Liu, Y.;Lv, Q.;Zhang, H.;Zhang, Q.;Li, J.;Ding, Q. .Enhanced microwave absorption in ZnO/carbonyl iron nano-composites by coating dielectric material[J].Journal of Magnetism and Magnetic Materials,2012(9):1720-1725. |
| [6] | Liu, JH;Ma, TY;Tong, H;Luo, W;Yan, M .Electromagnetic wave absorption properties of flaky Fe-Ti-Si-Al nanocrystalline composites[J].Journal of Magnetism and Magnetic Materials,2010(8):940-944. |
| [7] | Snoek J L .Dispersion and absorption in magnetic ferrites at frequencies above one Mc/s[J].Physica,1948,14(04):207-217. |
| [8] | Han Mangui;Tang Wei;Chen Wenbing et al.Effect of shape of Fe particles on their electromagnetic properties within 1-18 GHz range[J].Journal of Applied Physics,2010,107(09):09A958. |
| [9] | P.H. Zhou;L.J. Deng;J.L. Xie .Effects of particle morphology and crystal structure on the microwave properties of flake-like nanocrystalline Fe_3Co_2 particles[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):303-307. |
| [10] | XUE De-Sheng,LI Fa-Shen,FAN Xiao-Long,WEN Fu-Sheng.Bianisotropy Picture of Higher Permeability at Higher Frequencies[J].中国物理快报（英文版）,2008(11):4120-4123. |
| [11] | Vladimir B. Bregar .Advantages of Ferromagnetic Nanoparticle Composites in Microwave Absorbers[J].IEEE Transactions on Magnetics,2004(3):1679-1684. |
| [12] | Liu XG;Geng DY;Meng H;Cui WB;Yang F;Kang DJ;Zhang ZD .Microwave absorption properties of FCC-Co/Al2O3 and FCC-Co/Y2O3 nanocapsules[J].Solid State Communications,2009(1/2):64-67. |
| [13] | Wei, JQ;Wang, JB;Liu, QF;Qiao, L;Wang, T;Li, FS .Enhanced microwave absorption properties of Fe3Al/Al2O3 fine particle composites[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,2010(11):115001:1-115001:5. |
| [14] | Maeda T;Sugimoto S;Kagotani T;Tezuka N;Inomata K .Effect of the soft/hard exchange interaction on natural resonance frequency and electromagnetic wave absorption of the rare earth-iron-boron compounds[J].Journal of Magnetism and Magnetic Materials,2004(2/3):195-205. |
| [15] | Tuncer E.;Serdyuk Y.V.;Gubanski S.M. .Dielectric mixtures: electrical properties and modeling[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,2002(5):9-828. |
| [16] | Sung-Soo Kim;Sun-Tae Kim;Yeo-Choon Yoon;Kyung-Sub Lee .Magnetic, dielectric, and microwave absorbing properties of iron particles dispersed in rubber matrix in gigahertz frequencies[J].Journal of Applied Physics,2005(10):10F905-1-10F905-3-0. |
| [17] | Lagarkov, AN;Rozanov, KN .High-frequency behavior of magnetic composites[J].Journal of Magnetism and Magnetic Materials,2009(14):2082-2092. |
| [18] | Chuankun Zhang;Jianjun Jiang;Shaowei Bie.Electromagnetic and microwave absorption properties of surface modified Fe-Si-Al flakes with nylon[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2012:71-75. |
| [19] | Li Z W;Lin G Q;Wu Y P et al.High-frequency prop-erties and attenuation characteristics of WBa hexaferrite composites with doping of various oxides[J].IEEE Transactions on Magnetics,2009,45(02):670-677. |
| [20] | Kong, I.;Hj Ahmad, S.;Hj Abdullah, M.;Hui, D.;Nazlim Yusoff, A.;Puryanti, D. .Magnetic and microwave absorbing properties of magnetitethermoplastic natural rubber nanocomposites[J].Journal of Magnetism and Magnetic Materials,2010(21):3401-3409. |
| [21] | Jianqiang Wei;Zhaoqi Zhang;Bochong Wang;Tao Wang;Fashen Li .Microwave reflection characteristics of surface-modified Fe_(50)Ni_(50) fine particle composites[J].Journal of Applied Physics,2010(12):123908-1-123908-5. |
| [22] | Wang, B.;Wei, J.;Yang, Y.;Wang, T.;Li, F. .Investigation on peak frequency of the microwave absorption for carbonyl iron/epoxy resin composite[J].Journal of Magnetism and Magnetic Materials,2011(8):1101-1103. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%