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Volume 24 Issue 7
Jul.  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(7): 804-813
Peng Zhou, Jun-hong Chen, Meng Liu, Peng Jiang, Bin Li, and Xin-mei Hou, Microwave absorption properties of SiC@SiO2@Fe3O4 hybrids in the 2-18 GHz range, Int. J. Miner. Metall. Mater., 24(2017), No. 7, pp. 804-813. https://doi.org/10.1007/s12613-017-1464-8
Cite this article as:
Peng Zhou, Jun-hong Chen, Meng Liu, Peng Jiang, Bin Li, and Xin-mei Hou, Microwave absorption properties of SiC@SiO2@Fe3O4 hybrids in the 2-18 GHz range, Int. J. Miner. Metall. Mater., 24(2017), No. 7, pp. 804-813. https://doi.org/10.1007/s12613-017-1464-8
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研究论文Open Access

Microwave absorption properties of SiC@SiO2@Fe3O4 hybrids in the 2-18 GHz range

  • National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China

  • School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

  • Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China

  • 通讯作者:

    Xin-mei Hou    E-mail: houxinmeiustb@ustb.edu.cn

  • To enhance the microwave absorption performance of silicon carbide nanowires (SiCNWs), SiO2 nanoshells with a thickness of approximately 2 nm and Fe3O4 nanoparticles were grown on the surface of SiCNWs to form SiC@SiO2@Fe3O4 hybrids. The microwave absorption performance of the SiC@SiO2@Fe3O4 hybrids with different thicknesses was investigated in the frequency range from 2 to 18 GHz using a free-space antenna-based system. The results indicate that SiC@SiO2@Fe3O4 hybrids exhibit improved microwave absorption. In particular, in the case of an SiC@SiO2 to iron(Ⅲ) acetylacetonate mass ratio of 1:3, the microwave absorption with an absorber of 2-mm thickness exhibited a minimum reflection loss of -39.58 dB at 12.24 GHz. With respect to the enhanced microwave absorption mechanism, the Fe3O4 nanoparticles coated on SiC@SiO2 nanowires are proposed to balance the permeability and permittivity of the materials, contributing to the microwave attenuation.
    • Research ArticleOpen Access

    Microwave absorption properties of SiC@SiO2@Fe3O4 hybrids in the 2-18 GHz range

    + Author Affiliations
      Abstract
    • To enhance the microwave absorption performance of silicon carbide nanowires (SiCNWs), SiO2 nanoshells with a thickness of approximately 2 nm and Fe3O4 nanoparticles were grown on the surface of SiCNWs to form SiC@SiO2@Fe3O4 hybrids. The microwave absorption performance of the SiC@SiO2@Fe3O4 hybrids with different thicknesses was investigated in the frequency range from 2 to 18 GHz using a free-space antenna-based system. The results indicate that SiC@SiO2@Fe3O4 hybrids exhibit improved microwave absorption. In particular, in the case of an SiC@SiO2 to iron(Ⅲ) acetylacetonate mass ratio of 1:3, the microwave absorption with an absorber of 2-mm thickness exhibited a minimum reflection loss of -39.58 dB at 12.24 GHz. With respect to the enhanced microwave absorption mechanism, the Fe3O4 nanoparticles coated on SiC@SiO2 nanowires are proposed to balance the permeability and permittivity of the materials, contributing to the microwave attenuation.
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