Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7897769 | Journal of the European Ceramic Society | 2018 | 7 Pages |
Abstract
A single-layer radar-absorbing structure active in the X-band (8.2â¯GHz to 12.4â¯GHz) was demonstrated by blending SiC fibres with an AlPO4 matrix material. The as-prepared SiCf/AlPO4 composites were oxidized at 1273â¯K for several hours to investigate the effects of oxidation on the dielectric and wave-absorbing properties. Scanning and transmission electron microscopy were used to characterize the morphology and microstructure of the composites. The AlPO4-SiO2 solid solution during oxidation promoted the formation of a complete carbon layer on the SiC fibre surface. The real and imaginary parts of the SiCf/AlPO4 composites increased from 4.2-4.4 to 5.9-7.1 and from 0.08-0.2 to 3.9-5.2, respectively, with increasing oxidation time from 0 to 10â¯h, respectively. When the thickness of the composites increased from 2.9â¯mm to 3.3â¯mm, the wave-absorbing property noticeably improved due to the formation of a carbon layer on the SiC fibre surface after oxidation.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Feng Wan, Jianhui Yan, Hongmei Xu,