Journal of Inorganic Materials, Volume. 36, Issue 3, 306(2021)
A novel SiC/Cf composite with SiC array modified coating was prepared by electroless plating combined with high temperature sintering using glucose, Si powder and carbon fiber as raw materials. The phase composition, microstructure and absorbing properties of SiC/Cf composites were characterized by different methods. The results show that the surface of the carbon fiber is coated with a large amount of SiC arrays, which grows outward on the surface of the carbon fiber. The SiC arrays are uniformly distributed and approximately 1.4 μm in height. When the thickness of SiC/Cf composite is about 1-2 mm, with the thickness increasing, the minimum reflection loss (RLmin) moves from high frequency to low frequency. When the absorber thickness is 1.8 mm, the RLmin reaches -40.653 dB at 8.31 GHz and the effective absorption bandwidth (RL < -10 dB) is 1.11 GHz. When the thickness is 1.5 mm, the minimum effective absorption bandwidth can reach 2.42 GHz. Additionally, the RLmin is less than -20 dB when the absorber thickness ranges from 1.3 to 1.8 mm. This new SiC/Cf composite modified by SiC array is expected to be a lightweight and efficient electromagnetic absorbing material.
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Zhihong WU, Yue DENG, Zhenzhen MENG, Guoli ZHANG, Luping ZHANG, Yubin WANG.
Category: RESEARCH PAPER
Received: Jul. 1, 2020
Accepted: --
Published Online: Dec. 8, 2021
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