Electrospinning of Fe/SiC Hybrid Fibers for Highly Efficient Microwave Absorption.
Fe/SiC hybrid fibers have been fabricated by electrospinning and subsequent high-temperature (1300 °C) pyrolysis in Ar atmosphere using polycarbosilane (PCS) and Fe3O4precursors. It is found that the introduction of Fe has had a dramatic impact on the morphology, crystallization temperature, and microwave electromagnetic properties of the hybrid fibers. In addition, the Fe particles have acted as catalyst sites to facilitate the growth of SiCO nanowires on the surface of the hybrid fibers. As a result, the permittivity and permeability have been enhanced effectively, and the high reflection loss (RL) has been achieved at a low frequency band with a thin absorber thickness. At an optimal PCS/Fe ratio of 3:0.5, the hybrid fiber/silicone resin composite (35 wt %) with a 2.25 mm absorber thickness exhibits a minimal RL of about -46.3 dB at 6.4 GHz. The wide frequency band (4-9.6 GHz) and thin absorber thickness (1.5-3.5 mm) for effective absorption (<-20 dB) prove that the Fe/SiC hybrid fiber is a promising candidate to work as a highly efficient and lightweight absorber in the C band (4-8 GHz).
Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , 710072 Xi'an, China.
Yi
Y
Hou
Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , 710072 Xi'an, China.
Laifei
L
Cheng
Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , 710072 Xi'an, China.
Yani
http://orcid.org/0000-0002-1148-9660
Y
Zhang
Temasek Laboratories, National University of Singapore , 5A Engineering Drive 1, 117411 Singapore.
Yong
Y
Yang
Temasek Laboratories, National University of Singapore , 5A Engineering Drive 1, 117411 Singapore.
Chaoran
C
Deng
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics , 210016 Nanjing, China.
Zhihong
Z
Yang
Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , 710072 Xi'an, China.
Qi
Q
Chen
Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University , 710072 Xi'an, China.
Peng
P
Wang
Department of Mechanical Engineering, Khalifa University , 127788 Abu Dhabi, United Arab Emirates.
Lianxi
L
Zheng
Fe/SiC; electromagnetic properties; electrospinning; hybrid fibers; reflection loss