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Porous three-dimensional SiC/melamine-derived carbon foam (3D-SiC/MDCF) composite with an original open pore structure was fabricated by the heat treatment of the commercial melamine foam (MF), carbonization of the stable MF, and chemical vapor deposition of the ultra-thin SiC coating. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were employed to detect the microstructure and morphology of the as-prepared composites. The results indicated that the 3D-SiC/MDCF composites with the coating structure were prepared successfully. The obtained minimum reflection loss was -29.50 dB when the frequency and absorption thickness were 11.36 GHz and 1.75 mm, respectively. Further, a novel strategy was put forward to state that the best microwave absorption property with a thin thickness of 1.65 mm was gained, where the minimum reflection loss was -24.51 dB and the frequency bandwidth was 3.08 GHz. The excellent electromagnetic wave absorption ability resulted from the specific cladding structure, which could change the raw dielectric property to acquire excellent impedance matching. This present work had a certain extend reference meaning for the potential applications of the lightweight wave absorption materials with target functionalities.


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Porous SiC/melamine-derived carbon foam frameworks with excellent electromagnetic wave absorbing capacity

Show Author's information Xinli YEa,bZhaofeng CHENa( )Sufen AIcBin HOUdJunxiong ZHANGaXiaohui LIANGaQianbo ZHOUaHezhou LIUeSheng CUIf
International Laboratory for Insulation and Energy Efficiency Materials, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
Suzhou Superlong Aviation Heat Resistance Material Technology Co., Ltd., Suzhou 215400, China
Beijing Spacecrafts, China Academy of Space Technology, Beijing 100080, China
Department of Reactor Engineering, China Institute of Atomic Energy, Beijing 102413, China
The State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 211800, China

Abstract

Porous three-dimensional SiC/melamine-derived carbon foam (3D-SiC/MDCF) composite with an original open pore structure was fabricated by the heat treatment of the commercial melamine foam (MF), carbonization of the stable MF, and chemical vapor deposition of the ultra-thin SiC coating. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were employed to detect the microstructure and morphology of the as-prepared composites. The results indicated that the 3D-SiC/MDCF composites with the coating structure were prepared successfully. The obtained minimum reflection loss was -29.50 dB when the frequency and absorption thickness were 11.36 GHz and 1.75 mm, respectively. Further, a novel strategy was put forward to state that the best microwave absorption property with a thin thickness of 1.65 mm was gained, where the minimum reflection loss was -24.51 dB and the frequency bandwidth was 3.08 GHz. The excellent electromagnetic wave absorption ability resulted from the specific cladding structure, which could change the raw dielectric property to acquire excellent impedance matching. This present work had a certain extend reference meaning for the potential applications of the lightweight wave absorption materials with target functionalities.

Keywords:

three-dimensional SiC/melamine-derived carbon foam (3D-SiC/MDCF), chemical vapor deposition, coating structure, electromagnetic wave absorption characteristic, minimum reflection loss
Received: 23 January 2019 Revised: 14 March 2019 Accepted: 22 March 2019 Published: 23 October 2019 Issue date: December 2019
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Publication history
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Publication history

Received: 23 January 2019
Revised: 14 March 2019
Accepted: 22 March 2019
Published: 23 October 2019
Issue date: December 2019

Copyright

© The author(s) 2019

Acknowledgements

The present work was supported by the National Natural Science Foundation of China (Grant Nos. 51772151 and 51761145103) and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

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