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Multifunction properties of SiOC reinforced with carbon fiber and in-situ SiC nanowires

Herein, the SiC nanowires were successfully fabricated via chemical vapor infiltration (CVI) into carbon fiber felts (CFs) and then the SiOC/SiCnws/CFs composites were synthesized by precursor infiltration and pyrolysis (PIP) processes. Results indicated that the lightweight composites possessed enhanced mechanical performance, low thermal conductivity, and excellent electromagnetic wave absorption properties. Detailedly, the compressive strength reached to 22.0?MPa and 9.6?MPa after two PIP processes cycles in z and x/y directions, respectively. Meanwhile, the composites exhibited tailored electromagnetic wave absorption performance with the effective absorption bandwidth of 3.06?GHz, and the minimum reflection loss (RLmin) was -48.2?dB with a thickness of 3.6?mm. The present work has a guidance to prepare and design multifunction properties for application in harsh environment.

» Author: Junjie Qian, Anze Shui, Chao He, Xuan Wang, Mei Cai, Yadi Pu, Ping Hu, Bin Du

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