title: In Situ Growth of Core-Sheath Heterostructural SiC Nanowire Arrays on Carbon Fibers and Enhanced Electromagnetic Wave Absorption Performance.
abstract: Large-scale core-sheath heterostructural SiC nanowires were facilely grown on the surface of carbon fibers using a one-step chemical vapor infiltration process. The as-synthesized SiC nanowires consist of single crystalline SiC cores with a diameter of ∼30 nm and polycrystalline SiC sheaths with an average thickness of ∼60 nm. The formation mechanisms of core-sheath heterostructural SiC nanowires (SiCnws) were discussed in detail. The SiCnws-CF shows strong electromagnetic (EM) wave absorption performance with a maximum reflection loss value of -45.98 dB at 4.4 GHz. Moreover, being coated with conductive polymer polypyrrole (PPy) by a simple chemical polymerization method, the SiCnws-CF/PPy nanocomposites exhibited superior EM absorption abilities with maximum RL value of -50.19 dB at 14.2 GHz and the effective bandwidth of 6.2 GHz. The SiCnws-CF/PPy nanocomposites in this study are very promising as absorber materials with strong electromagnetic wave absorption performance.
authors.affiliation: National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors.forename: Liwen
authors.identifier: http://orcid.org/0000-0001-7042-1802
authors.initials: L
authors.lastname: Yan
authors.affiliation: National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors.forename: Changqing
authors.initials: C
authors.lastname: Hong
authors.affiliation: National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors.forename: Boqian
authors.initials: B
authors.lastname: Sun
authors.affiliation: National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors.forename: Guangdong
authors.initials: G
authors.lastname: Zhao
authors.affiliation: National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors.forename: Yehong
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors.forename: Shun
authors.initials: S
authors.lastname: Dong
authors.affiliation: National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors.forename: Dongyang
authors.initials: D
authors.lastname: Zhang
authors.affiliation: National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China.
authors.forename: Xinghong
authors.initials: X
authors.lastname: Zhang
keywords: SiC nanowires; carbon fiber; core−sheath; electromagnetic wave absorption; heterostructure