Abstract
The SiCw/SiCf composites composed by SiC whiskers with core–shell structure and SiC fiber with alike-array structure were prepared without growth catalyst, hydrogen silicone oil (H-PSO) as raw material, carbon fiber as the matrix. SiC fibers act as supports for a nanomesh containing interconnected one-dimensional SiC whiskers. The results of studying the absorption properties of the Ku band show that the density of stacking faults decreases and the aspect ratio increases as the heat treatment temperature increases and they jointly affect the dielectric properties of the SiCw/SiCf composites. The minimum reflection loss of the SiCw/SiCf composites obtained at 1400 °C can reach − 29.75 dB when the absorber thickness is 3.0 mm, and the effective bandwidth is 2.25 GHz. The polarization relaxation and interfacial polarization in the unique structure improve the microwave absorption properties and broaden the absorption frequency.
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This work was supported by the Natural Science Foundation Youth Fund of Hebei Province (E2016209327).
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Mi, Y., Chen, Y., Zheng, Z. et al. Dielectric response and microwave absorption properties of SiCw/SiCf composites derived from carbon fiber. J Mater Sci: Mater Electron 32, 442–452 (2021). https://doi.org/10.1007/s10854-020-04792-8
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DOI: https://doi.org/10.1007/s10854-020-04792-8