Synthesis and tunable electromagnetic shielding and absorption performance of the three-dimensional SiC nanowires/carbon fiber composites |
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| Affiliation: | 1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, PR China;2. School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, PR China;1. Univ Lyo n, Université Claude Bernard Lyon 1, CNRS, Laboratoire des Multimatériaux et Interfaces, F-69622 Villeurbanne, France;2. University of Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France;3. Sorbonne Université, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris, 4 Place de Jussieu, 75005 Paris, France;4. Laboratoire CRISMAT-ENSICAEN, Bd du Maréchal Juin,14050 Caen Cedex, France;1. Institute for Materials Applications in Mechanical Engineering (IWM), RWTH Aachen, Aachen 52062, Germany;2. Pulsar Photonics GmbH, Kaiserstraße 100, Herzogenrath 52134, Germany;1. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA), 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan;2. Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan;3. Department of Material Research, Technical Research Institute, Kawasaki Heavy Industries, Ltd., 1-1 Kawasaki, Akashi, Hyogo 673-8666, Japan;4. Graduate School of Business Administration, Hitotsubashi University, 2-1 Naka, Kunitachi, Tokyo 186-8601, Japan;1. School of Aircraft Engineering, Nanchang Hangkong University, Nanchang 330063, China;2. Key Laboratory of Nondestructive Testing of Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China;3. AECC Hunan Aviation Powerplant Research Institute, Zhuzhou 412002, China;4. National Key Laboratory of Thermo-structure Composite Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi''an 710072, China;5. China Academy of Launch Vehicle Technology, Beijing 100076, China;6. AECC Shenyang Engine Research Institute, Shenyang 110015, China |
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| Abstract: | Silicon-carbide nanowires (SiCnws) have been considered as dielectric loss materials for application in the field of electromagnetic wave (EMW) attenuation. In this study, SiCnws/carbon fiber (CF) composites were fabricated using precursor infiltration and pyrolysis process for the in-situ growth of SiCnws. The SiCnw fraction of the SiCnws/CF composites could be adjusted using various catalysts. At a small SiCnw fraction (38 wt%), the composites exhibited excellent EMW absorption performance with the minimum reflection loss of ? 18.3 dB when their thickness was only 1.2 mm and can cover the entire X and Ku bands by adjusting the material thickness. They transformed from EMW absorption performance to electromagnetic interference (EMI) shielding property with the increase in SiCnw fraction from 38 wt% to 73 wt%, reaching an EMI shielding effectiveness of 31.25 dB. In addition, the density of the SiCnws/CF composites was only 0.31–0.41 g/cm3, and their compressive strength can reach 0.61–0.99 MPa with excellent high-temperature stability. Therefore, the SiCnws/CF composite presents a promising EMW absorption and EMI shielding material that can be applied in harsh environments. |
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| Keywords: | SiC nanowires EMW absorption performance EMI shielding |
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