Synthesis and electromagnetic wave absorption properties of peanut shell-like SiC fibers

• Published in: Materials letters Vol. 263; p. 127288
• Main Authors: Zhu, Bin, Cui, Yi, Lv, Dongfeng, Liu, Pan, Wei, Hengyong, Bu, Jinglong
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.03.2020; Elsevier BV
• Subjects: Absorbing properties; Absorption; Biomimetic; Biomimetics; Electromagnetic radiation; Fibers; Materials science; Peanuts; Reflection; SiC fiber; Silicon dioxide; Superhigh frequencies; Surfaces; Surfaces; Absorbing properties; Biomimetic; SiC fiber
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2019.127288

•The peanut shell-like SiC fibers have been synthesized via electrospinning and carbothermal reduction.•The peanut shell-like SiC fibers exhibit excellent electromagnetic wave absorption ability in X-band.•The peanut shell bionic structure promotes electromagnetic wave loss and impedance matching. The peanut shell-like SiC fibers were prepared in order to improve the electromagnetic wave absorption properties. The phase of fibers was mainly β-SiC and less amorphous SiO2. The peanut shell-like holes with the average size of 89 nm appeared in the surface of SiC fibers. Their optimal reflection loss was high as −48 dB at 11.1 GHz as absorber thickness was 2.53 mm. The SiC fibers exhibit excellent electromagnetic wave absorption ability in X-band. It was attributed to the fibers’ biomimetic structure, which caused the microwave multiple reflection, scattering and Debye relaxation.