Synthesis of Fe/SiO2 composite particles and their superior electromagnetic properties in microwave band |
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| Authors: | X.J. Wei Y.X. Gong W.Z. Shao C.Y. Xu |
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| Affiliation: | School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Fe/SiO2 composite particles were synthesized by hydrogen reduction of Fe2O3/SiO2 precursor, which was prepared by sol-gel method. A reduction temperature higher than 600 °C is required for the complete conversion of Fe2O3 to Fe. Fe/SiO2 composite particles exhibit superior complex permittivity and permeability in the microwave band. A reflection loss higher than − 70 dB as well as a broad absorption band can be simultaneously obtained for Fe/SiO2-based coatings about 2 mm in thickness, suggesting that the Fe/SiO2 composite particles are a promising candidate for high performance electromagnetic absorption materials. |
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| Keywords: | Fe/SiO2 Sol-gel preparation Nanocomposite Microstructure Electromagnetic properties EMA performance |
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