Prepared and Microwave-Absorption Properties Investigation of χ-C-Fe-Si/SiC Coated Fe Nanocapsules
-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 -C-Fe-Si/SiC coated Fe nanocapsules absorbent were discussed.
Yansheng Yin and Xin Wang
G. M. Shi et al., "Prepared and Microwave-Absorption Properties Investigation of χ-C-Fe-Si/SiC Coated Fe Nanocapsules", Advanced Materials Research, Vols. 79-82, pp. 743-746, 2009