MICROWAVE ABSORPTION PROPERTIES OFβ-SiC–CCOMPOSITES WITH SOLID PHASE SINTERING AT X BAND

Zehua Zhou, Shouhong Tan, Dongliang Jiang and Yu Yi
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Zehua Zhou: Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China
Shouhong Tan: Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China
Dongliang Jiang: Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China
Yu Yi: Chongqing University, Chongqing 400044, P. R. China

Surface Review and Letters (SRL), 2005, vol. 12, issue 05n06, 799-807

Abstract: In this paper, by usingβ-SiCpowder as a matrix and mixing different content ofC, a series ofSiC–Ccomposites with solid phase sintering under different temperature were prepared. The relative density, electrical properties and microwave absorption properties at X band were measured systemically. The microwave absorption mechanisms of the composites were studied comprehensively by the test results, together with the microstructure and composition analysis. The main results show that the composites are good microwave absorption ceramics at X band because of the good interface's match of wave impedance by the control of properties and process,Ccontent and sintering process influence effectively all test properties. For theSiC–3wt%Ccomposites (which is the best microwave absorption one) under 2200° sintering, the biggest microwave attenuation is -40.5 dB and almost all attenuations are above -30 dB in the whole X band.

Keywords: Solid phase sintering; microwave absorption properties; X band; interface's match (search for similar items in EconPapers)
Date: 2005
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DOI: 10.1142/S0218625X0500758X

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