MICROWAVE ABSORPTION PROPERTIES OF β-SiC–C COMPOSITES WITH SOLID PHASE SINTERING AT X BAND
In this paper, by using β-SiC powder as a matrix and mixing different content of C, a series of SiC–C composites 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, C content and sintering process influence effectively all test properties. For the SiC–3wt%C composites (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.
Year of publication: |
2005
|
---|---|
Authors: | ZHOU, ZEHUA ; TAN, SHOUHONG ; JIANG, DONGLIANG ; YI, YU |
Published in: |
Surface Review and Letters (SRL). - World Scientific Publishing Co. Pte. Ltd., ISSN 1793-6667. - Vol. 12.2005, 05, p. 799-807
|
Publisher: |
World Scientific Publishing Co. Pte. Ltd. |
Subject: | Solid phase sintering | microwave absorption properties | X band | interface's match |
Saved in:
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