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Preparation and microwave absorbing properties of SiC microtubes

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Abstract

Using cotton as carbon source and template, SiC microtubes were prepared by the carbothermal reduction of a cotton-contained precursor, which was obtained by impregnating cotton in tetraethyl orthosilicate solution. To characterize the product, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and network analyzer were used. The results show that the SiC microtubes with surfaces composed of villus-like β-SiC nanowires have a length of tens to hundreds of micrometers and a diameter of several to 20 μm. SiC microtubes achieve a reflection loss below −10 dB (90% absorption) at different frequencies, and the minimum value is −23.9 dB at 17.5 GHz when its thickness is 1 mm.

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Acknowledgements

The study was financially supported by NSFC (Ref: 20973190) and an in-house research project of SKLCC from MOST (Ref: SKLCC-2009BWZ005).

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Authors and Affiliations

  1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, People’s Republic of China

    Shuai Meng, Xiangyun Guo, Guoqiang Jin, Yingyong Wang & Song Xie

  2. Graduate School of the Chinese Academy of Sciences, Beijing, 100039, People’s Republic of China

    Shuai Meng & Song Xie

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  1. Shuai Meng
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  2. Xiangyun Guo
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Correspondence to Shuai Meng.

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Meng, S., Guo, X., Jin, G. et al. Preparation and microwave absorbing properties of SiC microtubes. J Mater Sci 47, 2899–2902 (2012). https://doi.org/10.1007/s10853-011-6120-5

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  • DOI: https://doi.org/10.1007/s10853-011-6120-5

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