物理化学学报2026，Vol.42Issue(6)：125-143,19.DOI:10.1016/j.actphy.2026.100269
基于理论计算指导的FeCo合金泡沫设计合成及其在2.0-8.0 GHz范围内的吸波性能研究
Theoretical guidance for the rational design of FeCo foams toward efficient electromagnetic wave absorption in 2.0-8.0 GHz range
摘要
Abstract
Effective electromagnetic(EM)wave absorption with minimal coating thickness in the low-to mid-frequency range(2.0-8.0 GHz)remains a significant challenge.Herein,the EM parameters required for low-to mid-frequency EM wave absorption are systematically investigated,and CST Microwave Studio is employed to model and simulate how these target parameters can be realized through microstructural design.The results demonstrate that increasing the real parts of the relative permittivity(εr')and permeability(μr')is beneficial for achieving low-to mid-frequency EM wave absorption with reduced coating thickness.Moreover,CST simulations reveal that,for the same material system and identical volume filling fraction,increasing the specific surface area of the absorber contributes to an enhancement of εr'.Guided by these principles,FeCo cubes,FeCo particles,and FeCo foams with controlled specific surface areas and high permeability were synthesized.Experimental results confirm that an increased specific surface area effectively enhances εr',thereby promoting low-to mid-frequency absorption.As a result,the FeCo foam achieves an effective absorption bandwidth(EAB)of 3.2 GHz(4.8-8.0 GHz)in the C-band with a coating thickness of 2.0 mm,and 1.5 GHz(2.1-3.6 GHz)in the S-band with a coating thickness of 4.0 mm.This work provides valuable insights into the rational design of advanced low-to mid-frequency EM absorbing materials.关键词
电磁波吸收/微观结构设计/FeCo泡沫/宽频吸收/比表面积Key words
Electromagnetic wave absorption/Microstructure design/FeCo foam/Wideband absorption/Specific surface area分类
化学化工引用本文复制引用
胡波,陈言轶,陈永政,王璇,韩喜江,杜耘辰..基于理论计算指导的FeCo合金泡沫设计合成及其在2.0-8.0 GHz范围内的吸波性能研究[J].物理化学学报,2026,42(6):125-143,19.基金项目
本研究得到国家自然科学基金项目(22475057和52373262)的资助 （22475057和52373262）
