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Research Article | Open Access

Microwave induced in-situ formation of SiC nanowires on SiCNO ceramic aerogels with excellent electromagnetic wave absorption performance

Keke YUANa,Daoyang HANa,Junfang LIANGaWanyu ZHAObMingliang LIa( )Biao ZHAOcWen LIUaHongxia LUaHailong WANGaHongliang XUaGang SHAOa( )Rui ZHANGa,d
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
The 27th Research Institute of China Electronic Technology Group Corporation, Zhengzhou 450047, China
Henan Key Laboratory of Aeronautical Material and Application Technology, School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, China
School of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China

† Keke Yuan and Daoyang Han contributed equally to this work.

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Electromagnetic absorption (EMA) materials with light weight and harsh environmental robustness are highly desired and crucially important in the stealth of high-speed vehicles. However, meeting these two requirements is always a great challenge, which excluded the most attractive lightweight candidates, such as carbon-based materials. In this study, SiCnw-reinforced SiCNO (SiCnw/ SiCNO) composite aerogels were fabricated through the in-situ growth of SiCnw in polymer-derived SiCNO ceramic aerogels by using catalyst-assisted microwave heating at ultra-low temperature and in short time. The phase composition, microstructure, and EMA property of the SiCnw/SiCNO composite aerogels were systematically investigated. The results indicated that the morphology and phase composition of SiCnw/SiCNO composite aerogels can be regulated easily by varying the microwave treatment temperature. The composite aerogels show excellent EMA property with minimum reflection loss of -23.9 dB@13.8 GHz, -26.5 dB@10.9 GHz, and -20.4 dB@14.5 GHz and the corresponding effective bandwidth of 5.2 GHz, 3.2 GHz, and 4.8 GHz at 2.0 mm thickness for microwave treatment at 600 ℃, 800 ℃, and 1000 ℃, respectively, which is much better than that of SiCN ceramic aerogels. The superior EMA performance is mainly attributed to the improved impedance matching, multi- reflection, multi-interfacial polarization, and micro current caused by migration of hopping electrons.


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Journal of Advanced Ceramics
Pages 1140-1151
Cite this article:
YUAN K, HAN D, LIANG J, et al. Microwave induced in-situ formation of SiC nanowires on SiCNO ceramic aerogels with excellent electromagnetic wave absorption performance. Journal of Advanced Ceramics, 2021, 10(5): 1140-1151.








Web of Science






Received: 29 April 2021
Revised: 14 June 2021
Accepted: 24 June 2021
Published: 12 August 2021
© The Author(s) 2021

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