典型文献
Synthesis of carbon-coated cobalt ferrite core-shell structure composite:A method for enhancing electromagnetic wave absorption properties by adjusting impedance matching
文献摘要：
Cobalt ferrite has problems such as poor impedance matching and high density,which results in unsatis-factory electromagnetic wave(EMW)absorption performance.In this study,the CoFe2O4@C core-shell structure composite was synthesized by a two-step hydrothermal method.X-ray diffraction,transmission electron microscopy,Fourier transform infrared spectroscopy,thermogravimetric analysis,and vector network analysis et al.were used to test the structure and EMW absorption properties of CoFe2O4@C composite.The results show that the reflection loss(RL)of the CoFe2O4@C composite reaches the maximum value of-25.66 dB at 13.92 GHz,and the effective absorbing band(EAB)is 4.59 GHz(11.20-15.79 GHz)when the carbon mass content is 6.01％.The RL and EAB of CoFe2O4@C composite are increased by 219.55％and 4.59 GHz respectively,and the density is decreased by 20.78％compared with the cobalt ferrite.Such enhanced EMW absorption properties of CoFe2O4@C composite are attributed to the attenuation caused by the strong natural resonance of the cobalt ferrite,moreover,the carbon coat-ing layer adjusts the impedance matching of the composite,and the introduced dipole polarization and interface polarization can cause multiple Debye relaxation processes.
文献关键词：
中图分类号：
作者姓名：
ling Gao;Zhijun Ma;Fuli Liu;Cunxin Chen
作者机构：
School of Mining,Liaoning Technical University,Fuxin 123000,China;School of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing 100083,China
文献出处：
引用格式：
[1]ling Gao;Zhijun Ma;Fuli Liu;Cunxin Chen-.Synthesis of carbon-coated cobalt ferrite core-shell structure composite:A method for enhancing electromagnetic wave absorption properties by adjusting impedance matching)[J].中国化学工程学报（英文版）,2022(07):206-217
A类：
unsatis
B类：
Synthesis,carbon,coated,cobalt,ferrite,core,shell,structure,composite,method,enhancing,electromagnetic,wave,absorption,properties,adjusting,impedance,matching,Cobalt,has,problems,such,poor,high,density,which,results,factory,EMW,performance,In,this,study,CoFe2O4,was,synthesized,step,hydrothermal,ray,diffraction,transmission,electron,microscopy,Fourier,transform,infrared,spectroscopy,thermogravimetric,analysis,vector,network,were,test,show,that,reflection,loss,RL,reaches,maximum,value,dB,GHz,effective,absorbing,band,EAB,when,mass,content,increased,respectively,decreased,compared,Such,enhanced,attributed,attenuation,caused,strong,natural,resonance,moreover,layer,adjusts,introduced,dipole,polarization,interface,can,multiple,Debye,relaxation,processes
AB值：
0.527372
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