Preparation and Microwave Absorption Properties of Nanocrystalline α-Fe Microfibres
Nanocrystalline α-Fe microfibres with diameters of 0.2-6.0μm and an average grain size of 44nm were prepared by the simple organic gel-thermal reduction process.The natural resonance frequency of the nanocrystalline α-Fe microfibers is shifted to a high frequency (8.5GHz) possibly due to a remarkable increase in surface-and shape-anisotropy.For the 0.7mm thickness specimen of 50wt% nanocrystalline α-Fe mi crofibers in paraffin wax,the reflection loss (RL) reaches a minimum value about-24 dB at 17.5GHz.With the thickness of 1.2mm,the absorption band width (RL<-10dB) is about 7 GHz ranging from 6.5 to 13.5GHz,which covers 43% of the G-band (4.2-8.2GHz) and the whole X-band (8.2-12.4GHz).
Organic Gel-thermal Reduction Process Microfibres α-Fe Microwave Absorption
Chunyu WEI Xiangqian SHEN Yingde WANG
School of Materials Science and Engineering,Jiangsu University,Zhenjiang,China,212013 College of Aerospace and Materials Engineering,National University of Defense Technology,Changsha,Ch
国内会议
重庆
英文
753-755
2011-11-16（万方平台首次上网日期，不代表论文的发表时间）