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In situ growth of B4C nanowires on activated carbon felt to improve microwave absorption performance

Wang, Beibei ; Fu, Qiangang ; Song, Qiang ; Yu, Zhaoju ; Riedel, Ralf (2020):
In situ growth of B4C nanowires on activated carbon felt to improve microwave absorption performance.
In: Applied Physics Letters, 116 (20), p. 203101. AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA, ISSN 0003-6951, e-ISSN 1077-3118,
DOI: 10.1063/5.0007332,
[Article]

Abstract

Boron carbide (B4C) nanowires were synthesized on the surface of activated carbon felt (ACF) via an in situ thermal growth method. The microstructures of B4C nanowires were characterized by field emission scanning electron microscopy, transmission electron microscopy, and x-ray diffraction. The minimum reflection loss (RLmin) value of 40wt. % ACF@B4C hybrid materials amounts to -36.1 dB at 17.2GHz and the effective absorption bandwidth (RL < -10dB) is obtained over a high frequency range of 15.9-18GHz with an absorber layer thickness of 5mm. The obtained results prove that ACF@B4C hybrid materials have high potential as microwave absorbers with excellent microwave absorption property.

Item Type: Article
Erschienen: 2020
Creators: Wang, Beibei ; Fu, Qiangang ; Song, Qiang ; Yu, Zhaoju ; Riedel, Ralf
Title: In situ growth of B4C nanowires on activated carbon felt to improve microwave absorption performance
Language: English
Abstract:

Boron carbide (B4C) nanowires were synthesized on the surface of activated carbon felt (ACF) via an in situ thermal growth method. The microstructures of B4C nanowires were characterized by field emission scanning electron microscopy, transmission electron microscopy, and x-ray diffraction. The minimum reflection loss (RLmin) value of 40wt. % ACF@B4C hybrid materials amounts to -36.1 dB at 17.2GHz and the effective absorption bandwidth (RL < -10dB) is obtained over a high frequency range of 15.9-18GHz with an absorber layer thickness of 5mm. The obtained results prove that ACF@B4C hybrid materials have high potential as microwave absorbers with excellent microwave absorption property.

Journal or Publication Title: Applied Physics Letters
Journal volume: 116
Number: 20
Publisher: AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Uncontrolled Keywords: BORON-CARBIDE; FIBERS; COMPOSITES; FOAM
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: 12 Jun 2020 06:02
DOI: 10.1063/5.0007332
Official URL: https://aip.scitation.org/doi/10.1063/5.0007332
Projects: National Key Research and Development Program of China, Grant Number 2017YFB0308303, Research Fund of State Key Laboratory of Solidification Processing (Northwestern Polytechnical University), National Natural Science Foundation of China, Grant Number 51872239
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