| Microwave absorption properties of SiC@SiO2@Fe3O4 hybrids in the 2-18 GHz range |
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| 引用本文： | Peng Zhou,Jun-hong Chen,Meng Liu,Peng Jiang,Bin Li,Xin-mei Hou. Microwave absorption properties of SiC@SiO2@Fe3O4 hybrids in the 2-18 GHz range[J]. 矿物冶金与材料学报, 2017, 24(7): 804-813. DOI: 10.1007/s12613-017-1464-8 |
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| 作者姓名： | Peng Zhou Jun-hong Chen Meng Liu Peng Jiang Bin Li Xin-mei Hou |
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| 作者单位： | National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China |
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| 摘 要： | 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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| 关 键 词： | silicon carbide nanowires hybrids microwave absorption mechanism impedance match |
Microwave absorption properties of SiC@SiO2@Fe3O4 hybrids in the 2–18 GHz range |
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| Peng Zhou,Jun-hong Chen,Meng Liu,Peng Jiang,Bin Li,Xin-mei Hou. Microwave absorption properties of SiC@SiO2@Fe3O4 hybrids in the 2–18 GHz range[J]. International Journal of Minerals,Metallurgy and Materials, 2017, 24(7): 804-813. DOI: 10.1007/s12613-017-1464-8 |
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| Authors: | Peng Zhou Jun-hong Chen Meng Liu Peng Jiang Bin Li Xin-mei Hou |
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| Affiliation: | 1.National Engineering Research Center for Advanced Rolling Technology,University of Science and Technology Beijing,Beijing,China;2.School of Material Science and Engineering,University of Science and Technology Beijing,Beijing,China;3.Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing,Beijing,China |
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| 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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