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SiBCN-reduced graphene oxide (rGO) ceramic composites derived from single-source-precursor with enhanced and tunable microwave absorption performance

Chen, Qingqing ; Li, Daxin ; Yang, Zhihua ; Jia, Dechang ; Zhou, Yu ; Riedel, Ralf ; Zhang, Tao ; Gao, Chenguang (2021):
SiBCN-reduced graphene oxide (rGO) ceramic composites derived from single-source-precursor with enhanced and tunable microwave absorption performance.
In: Carbon, 179, pp. 180-189. Pergamon-Elsevier Science, ISSN 0008-6223, e-ISSN 1873-3891,
DOI: 10.1016/j.carbon.2021.03.057,
[Article]

Abstract

SiBCN-reduced graphene oxide (SiBCN-rGO) ceramic composites with different rGO content derived from a single-source precursor were successful synthesized by polymer derived ceramics routes to tune their dielectric properties and electromagnetic wave absorption capacity. SiBCN-rGO ceramic composites with 6 wt% GO annealed at 1300 °C possessed the best microwave absorption performance obtaining the minimum reflection coefficient (RCmin) of −62.71 dB at 10.72 GHz, and the thin thickness of 2.17 mm. Adjusting its thickness to 1.58 mm could obtain the maximum effective absorption bandwidth (RC < −10 dB) of 4.32 GHz. The microwave absorption mechanisms of the as-prepared SiBCN-rGO ceramic composites were mainly attributed to the conductive loss and polarization loss induced by the synergistic effects of amorphous SiBCN matrix, rGO and SiC nanocrystals.

Item Type: Article
Erschienen: 2021
Creators: Chen, Qingqing ; Li, Daxin ; Yang, Zhihua ; Jia, Dechang ; Zhou, Yu ; Riedel, Ralf ; Zhang, Tao ; Gao, Chenguang
Title: SiBCN-reduced graphene oxide (rGO) ceramic composites derived from single-source-precursor with enhanced and tunable microwave absorption performance
Language: English
Abstract:

SiBCN-reduced graphene oxide (SiBCN-rGO) ceramic composites with different rGO content derived from a single-source precursor were successful synthesized by polymer derived ceramics routes to tune their dielectric properties and electromagnetic wave absorption capacity. SiBCN-rGO ceramic composites with 6 wt% GO annealed at 1300 °C possessed the best microwave absorption performance obtaining the minimum reflection coefficient (RCmin) of −62.71 dB at 10.72 GHz, and the thin thickness of 2.17 mm. Adjusting its thickness to 1.58 mm could obtain the maximum effective absorption bandwidth (RC < −10 dB) of 4.32 GHz. The microwave absorption mechanisms of the as-prepared SiBCN-rGO ceramic composites were mainly attributed to the conductive loss and polarization loss induced by the synergistic effects of amorphous SiBCN matrix, rGO and SiC nanocrystals.

Journal or Publication Title: Carbon
Journal volume: 179
Publisher: Pergamon-Elsevier Science
Uncontrolled Keywords: SiBCN, Single-source-precursor, Dielectric properties, Electromagnetic wave absorption, EMW Absorbing Properties, Dielectric-Properties, Carbon Nanotubes, PDCS-SIBCN; C-N, Interference, Microstructure, Nanostructures, Nanocomposites, Lightweight
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 14 Jul 2021 05:58
DOI: 10.1016/j.carbon.2021.03.057
Official URL: https://www.sciencedirect.com/science/article/abs/pii/S00086...
Projects: National Natural Science Foundation of China (NSFC), Grant Numbers 52002092, 51832002, China Postdoctoral Science Foundation, Grant Numbers BX20190095, LBH-Z19141, 2019M660072, National Key Research and Development Program of China, grant Number 2017YFB0310400, Advanced Space Propulsion Laboratory of BICE, Beijing Engineering Research Center of Efficient and Green Aerospace Propulsion Technology, Grant Number LabASP-2019-08
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