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- Title
Preparation and microwave absorbing properties of SiC microtubes.
- Authors
Meng, Shuai; Guo, Xiangyun; Jin, Guoqiang; Wang, Yingyong; Xie, Song
- Abstract
Using cotton as carbon source and template, SiC microtubes were prepared by the carbothermal reduction of a cotton-contained precursor, which was obtained by impregnating cotton in tetraethyl orthosilicate solution. To characterize the product, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and network analyzer were used. The results show that the SiC microtubes with surfaces composed of villus-like β-SiC nanowires have a length of tens to hundreds of micrometers and a diameter of several to 20 μm. SiC microtubes achieve a reflection loss below −10 dB (90% absorption) at different frequencies, and the minimum value is −23.9 dB at 17.5 GHz when its thickness is 1 mm.
- Subjects
SILICON carbide; MICROSTRUCTURE; MICROWAVES; COTTON; NANOWIRES; X-ray diffraction; SCANNING electron microscopy; TRANSMISSION electron microscopy
- Publication
Journal of Materials Science, 2012, Vol 47, Issue 6, p2899
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-011-6120-5