With the development of electromagnetic technology, there is an urgent need for further research on highly efficient and lightweight microwave absorption materials. Transition metal carbides have drawn tremendous attention due to their strong microwave dissipation ability and perfect stability in extreme environments. However, owing to carburization under high temperatures, synthesizing metal carbides with specified morphology is still a challenge. Here, titanium carbide (TiC) with a flake-like structure was prepared through a carbothermic reduction method guided by two-dimensional graphene sheets. The prepared flake-like TiC sheets show excellent microwave absorption properties in 1–40 GHz compared with TiC spherical particles. A minimum reflection loss (RL) of −57.0 dB at 11.8 and 3.2 GHz effective absorption bandwidth (RL < −10 dB) was achieved. Meanwhile, an optimal RL of −57 dB is also achieved at 35.8 GHz together with an even broader absorption bandwidth from 34.2 to 40 GHz (5.8 GHz in total). This excellent microwave absorption performance is attributed to the flake-like morphology, which dramatically enhances the multiple polarization loss. The method of utilizing graphene sheets as a guide to fabricate flake-like TiC not only illuminates a new strategy for fabricating transition metal carbides with specified morphology but also provides an attractive candidate for microwave absorption applications.
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14 December 2021
Research Article|
December 08 2021
Microwave absorption enhancement via graphene sheet-guided preparation of flake-like titanium carbide
Special Collection:
Microwave Absorption by Carbon-Based Materials and Structures
Shasha Wang;
Shasha Wang
1
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People's Republic of China
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Jianjun Li
;
Jianjun Li
a)
1
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People's Republic of China
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Xianxian Sun;
Xianxian Sun
1
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People's Republic of China
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Minglong Yang;
Minglong Yang
1
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People's Republic of China
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Shuang Yang;
Shuang Yang
1
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People's Republic of China
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Weilong Yin;
Weilong Yin
1
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People's Republic of China
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Yibin Li
Yibin Li
a)
1
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
, Harbin 150080, People's Republic of China
2
Research Institute for Frontier Science, Beihang University
, Beijing 100191, People's Republic of China
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Note: This paper is part of the Special Topic on Microwave Absorption by Carbon-Based Materials and Structures.
J. Appl. Phys. 130, 224301 (2021)
Article history
Received:
October 03 2021
Accepted:
November 16 2021
Citation
Shasha Wang, Jianjun Li, Xianxian Sun, Minglong Yang, Shuang Yang, Weilong Yin, Yibin Li; Microwave absorption enhancement via graphene sheet-guided preparation of flake-like titanium carbide. J. Appl. Phys. 14 December 2021; 130 (22): 224301. https://doi.org/10.1063/5.0073714
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