Prepared and microwave–absorption properties investigation of x–C–Fe–Si / SiC coated Fe nanocapsules
x-C-Fe-Si/SiC coated Fe nanocapsules were prepared by arc evaporating the mixture of Fe and SiC powders in He and H2 atmosphere, and their microstructure, surface compositions and electromagnetic(EM) properties(2–18GHz) were investigated by means of high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and network analyzer, respectively. The reflection loss R of less than –20 dB was obtained in the frequency range of 3.13–13.6 GHz with an absorber thickness of 2.0–5.5 mm. An optimal reflection loss of–37.2 dB was reached at 5.6GHz with an absorber thickness of 4.5mm. The microwave absorptive mechanisms of x-C-Fe-Si/SiC coated Fe nanocapsules absorbent were discussed.
Microwave-absorption material Arc discharge Fe(x-C-Fe-Si/SiC) Nanocapsules Core/Shell structure Electromagnetic parameter
SHI Guimei ZHANG Jinhu LIAN Shu SONG Ge ZHANG Jinbing
Shenyang University of Technology, Shenyang 110178, China
国际会议
青岛
英文
743-746
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）