Microwave synthesis of worm-like SiC nanowires for thin electromagnetic wave absorbing materials

Thin thickness is always the pursuit of excellent electromagnetic wave absorbing materials. Herein, SiC nanowires with worm-like morphology were synthesized by microwave heating the mixture of expanded graphite and silica. The worm-like SiC nanowires exhibit an excellent microwave absorption ability...

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Bibliographic Details
Published in:Ceramics international 2019-06, Vol.45 (9), p.11660-11667
Main Authors: Kuang, Jianlei, Xiao, Ting, Hou, Xianjie, Zheng, Qianfang, Wang, Qi, Jiang, Peng, Cao, Wenbin
Format: Article
Language:English
Subjects:
Dielectric properties
Functional applications
Microwave processing
SiC nanowires
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Summary:Thin thickness is always the pursuit of excellent electromagnetic wave absorbing materials. Herein, SiC nanowires with worm-like morphology were synthesized by microwave heating the mixture of expanded graphite and silica. The worm-like SiC nanowires exhibit an excellent microwave absorption ability at a thin thickness. With the filling ratio of SiC nanowires increases in the matrix, the dielectric loss and microwave absorbing ability are significantly enhanced; meanwhile the number of absorption peaks is gradually increased, and the absorption peaks also move toward a thinner thickness. When the nanowires filling ratio was 40 wt%, the minimum reflection loss reached down to −35.2 dB and the effective absorption (RL 
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2019.03.040