Wave Absorption Properties of Co–C Nanoparticles Prepared by the Gaseous Detonation Method

Co–C nanoparticles are synthesized via the detonation of benzene and oxygen with cobalt(III) acetylacetonate as a precursor, and the influence of heat treatment on their physical performances is explored. The results indicate that the crystallinity and degree of graphitization of Co–C nanoparticles...

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Bibliographic Details
Published in:Combustion, explosion, and shock waves explosion, and shock waves, 2021-11, Vol.57 (6), p.704-712
Main Authors: Zhao, T.-J., Wang, X.-H., Kang, S., Wang, Z.-F., Yan, H.-H.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Classical Mechanics
Control
Dynamical Systems
Engineering
Physical Chemistry
Physics
Physics and Astronomy
Vibration
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Summary:Co–C nanoparticles are synthesized via the detonation of benzene and oxygen with cobalt(III) acetylacetonate as a precursor, and the influence of heat treatment on their physical performances is explored. The results indicate that the crystallinity and degree of graphitization of Co–C nanoparticles are dramatically improved after heat treatment, and the impedance matching degree also increases significantly. The wave absorption property is enhanced by more than six times, and the minimum reflection loss is –17.5 dB at 16.98 GHz. The impedance mismatching is the main reason for the poor wave absorption of original Co–C nanoparticles. The temperature plays an important role in the impedance matching degree and wave absorption performance, and a heat-treated process can be a useful way to solve impedance mismatching of Co–C nanoparticles prepared by gaseous detonation.
ISSN:0010-5082
1573-8345
DOI:10.1134/S0010508221060095