TY - JOUR
T1 - Preparation and 3D network structure optimization of SiC and SiC@Fe3Si nanofibers for enhanced electromagnetic wave absorption
AU - Xiang, Dandan
AU - He, Qinchuan
AU - Fan, Congmin
AU - Wang, Yiqun
AU - Yin, Xuemin
AU - Wang, Changcong
N1 - Publisher Copyright:
© 2025 Elsevier Ltd
PY - 2025/6
Y1 - 2025/6
N2 - The Electromagnetic wave absorbing materials (EWAM) prepared by coupling magnetic elements with SiC nanofibers have excellent comprehensive characteristics, including ample network free spaces, numerous interfacial polarization sites and enhanced dielectric dissipation capacity, exhibiting critical potential for 5G communication systems and artificial intelligence applications. Based on the design of three-dimensional (3D) network structure, nanofiber precursors were prepared by electrostatic spinning, and then SiC nanofibers and SiC@Fe3Si composite nanofibers were synthesized by combination with carbothermal reduction reaction. The effective absorption bandwidth of SiC nanofibers reaches up to 6.16 GHz and the minimum reflection loss (RLmin) is −66.07 dB. After the introduction of magnetic components, the RLmin of SiC@Fe3Si composite nanofibers (SC3-F) is increased to −73.75 dB. Scanning electron microscopy and electromagnetic parameters demonstrate the synergistic mechanism of interfacial/dipole polarization and magnetic coupling, revealing its important contribution to multiple reflections and impedance matching. In addition, further theoretical evaluations of the different domains were carried out through CST analog simulations, illustrating the effect of the materials on radar stealth. This study provides new ideas for the design of new-generation high-performance EWAM materials and lays the foundation for their extensive development in multifunctional applications.
AB - The Electromagnetic wave absorbing materials (EWAM) prepared by coupling magnetic elements with SiC nanofibers have excellent comprehensive characteristics, including ample network free spaces, numerous interfacial polarization sites and enhanced dielectric dissipation capacity, exhibiting critical potential for 5G communication systems and artificial intelligence applications. Based on the design of three-dimensional (3D) network structure, nanofiber precursors were prepared by electrostatic spinning, and then SiC nanofibers and SiC@Fe3Si composite nanofibers were synthesized by combination with carbothermal reduction reaction. The effective absorption bandwidth of SiC nanofibers reaches up to 6.16 GHz and the minimum reflection loss (RLmin) is −66.07 dB. After the introduction of magnetic components, the RLmin of SiC@Fe3Si composite nanofibers (SC3-F) is increased to −73.75 dB. Scanning electron microscopy and electromagnetic parameters demonstrate the synergistic mechanism of interfacial/dipole polarization and magnetic coupling, revealing its important contribution to multiple reflections and impedance matching. In addition, further theoretical evaluations of the different domains were carried out through CST analog simulations, illustrating the effect of the materials on radar stealth. This study provides new ideas for the design of new-generation high-performance EWAM materials and lays the foundation for their extensive development in multifunctional applications.
KW - Carbothermal reduction reaction
KW - Electromagnetic wave absorption
KW - Electrostatic spinning
KW - Nanofiber
UR - http://www.scopus.com/inward/record.url?scp=105006728261&partnerID=8YFLogxK
U2 - 10.1016/j.mtnano.2025.100644
DO - 10.1016/j.mtnano.2025.100644
M3 - 文章
AN - SCOPUS:105006728261
SN - 2588-8420
VL - 30
JO - Materials Today Nano
JF - Materials Today Nano
M1 - 100644
ER -