Structural design and controllable preparation of SiC NWs@Fe_(3)O_(4)@NC nanocomposites for electromagnetic wave absorption  

作　　者：Wenxin Zhao Meng Zhang Yukun Miao Chang Wang Anguo Cui Liying Yuan Zeqing Miao Xiaoqing Wang Zhibo Wang Haoyu Pang Alan Meng Zhenjiang Li Ting Wang 

机构地区：[1]College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]Shandong Engineering Laboratory for Preparation and Application of High-Performance Carbon-Materials,College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,China [3]Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science,MOE,Shandong Key Laboratory of Biochemical Analysis,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [4]College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第3期520-533,共14页矿物冶金与材料学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos. 52072196, 52002200, 52102106,52202262, 22379081, and 22379080);Major Basic Research Program of Natural Science Foundation of Shandong Province,China(No. ZR2020ZD09);Natural Science Foundation of Shandong Province,China(Nos. ZR2020QE063, ZR2022ME090, and ZR2023QE059);supported by the Visiting Scholar Fellowship Funding for Teachers in Shandong Province’s General Undergraduate Institutions;the Visiting Research Fund for Teachers of Ordinary Undergraduate Universities of Shand ong Province

摘　　要：Using SiC nanowires(SiCNWs)as the substrate,reflux-annealing and electrodeposition-carbonization were sequentially applied to integrate SiC nanowires with magnetic Fe_(3)O_(4) nanoparticles and amorphous nitrogen-doped carbon(NC)for the fabrication of SiCNWs@Fe_(3)O_(4)@NC nanocomposite.Comprehensive testing and characterization of this product provided valuable insights into the im-pact of structural and composition changes on its electromagnetic wave absorption performances.The optimized SiCNWs@Fe_(3)O_(4)@NC nanocomposite,which has 30wt%filler content and a corresponding thickness of 2.03 mm,demonstrates exceptional performance with the minimum reflection loss(RL_(min))of-53.69 dB at 11.04 GHz and effective absorption bandwidth(EAB)of 4.4 GHz.The synergistic effects of the enhanced nanocomposite on electromagnetic wave absorption were thoroughly elucidated using the theories of multiple scattering,polarization relaxation,hysteresis loss,and eddy current loss.Furthermore,a multicomponent electromagnetic wave attenu-ation model was established,providing valuable insight into the design of novel absorbing materials and the enhancement of their absorp-tion performances.This research demonstrated the significant potential of the SiCNWs@Fe_(3)O_(4)@NC nanocomposite as a highly efficient electromagnetic wave-absorbing material with potential applications in various fields,such as stealth technology and microwave absorption.

关 键 词：electromagnetic attenuation mechanism multicomponent nanocomposite SiC nanowires structural design 

分 类 号：TB33[一般工业技术—材料科学与工程]