TiN/Fe_(2)N/C composite with stable and broadband high-temperature microwave absorption  

作　　者：Yahong Zhang Yi Zhang Huimin Liu Dan Li Yibo Wang Chunchao Xu Yuping Tian Hongjie Meng 

机构地区：[1]College of Chemistry and Molecular Sciences,Henan University,Kaifeng 475004,China [2]Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province,Institute of Surface Micro and Nano Materials,College of Chemical and Materials Engineering,Xuchang University,Xuchang 461000,China [3]School of Energy Science and Technology,Henan University,Zhengzhou 450046,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2024年第11期2508-2517,共10页矿物冶金与材料学报（英文版）

基　　金：financially supported by the Natural Science Foundation of Henan Province Youth Fund of China(No.242300421466);the Key Scientific Research Project Plan in Universities of Henan Province,China(No.23A430037);the Research Project of Xuchang University,China(No.2024ZD004);the College Students’Innovation and Entrepreneurship Training Program of China(No.202410480008).

摘　　要：Facing the complex variable high-temperature environment,electromagnetic wave(EMW)absorbing materials maintaining high stability and satisfying absorbing properties is essential.This study focused on the synthesis and EMW absorbing performance evaluation of TiN/Fe_(2)N/C composite materials,which were prepared using electrostatic spinning followed by a high-temperature nitridation process.The TiN/Fe_(2)N/C fibers constructed a well-developed conductive network that generates considerable conduction loss.The heterogeneous interfaces between different components generated a significant level of interfacial polarization.Thanks to the synergistic effect of stable dielectric loss and optimized impedance matching,the TiN/Fe_(2)N/C composite materials demonstrated excellent and stable absorption performance across a wide temperature range(293-453 K).Moreover,TiN/Fe_(2)N/C-15 achieved a minimum reflection loss(RL)of−48.01 dB and an effective absorption bandwidth(EAB)of 3.64 GHz at 2.1 mm and 373 K.This work provides new insights into the development of high-efficiency and stabile EMW absorbing materials under complex variable high-temperature conditions.

关 键 词：high-temperature impedance matching stable permittivity dielectric loss 

分 类 号：TB34[一般工业技术—材料科学与工程]