无机材料学报

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碳化硅网眼多孔陶瓷的微波吸收特性

朱新文; 江东亮; 谭寿洪   

  1. 中国科学院上海硅酸盐研究所 上海 200050
  • 收稿日期:2001-10-11 修回日期:2001-11-13 出版日期:2002-11-20 网络出版日期:2002-11-20

Microwave Absorbing Property of SiC Reticulated Porous Ceramics

ZHU Xin-Wen; JIANG Dong-Liang; TAN Shou-Hong   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2001-10-11 Revised:2001-11-13 Published:2002-11-20 Online:2002-11-20

摘要: 研究了碳化硅网眼陶瓷的微波吸收特性,发现它比实心材料的吸波性能几乎提高了两倍以上,这种吸波性能的改善主要来自网眼结构对电磁波产生的反射、散射及干涉作用引起的衰减.孔径大小、相对密度、试样厚度等因素对碳化硅网眼陶瓷的微波吸收性能的影响进行了讨论.本工作将为低成本、高性能结构型微波吸收材料的设计提供一条新途径.

关键词: 碳化硅, 网眼陶瓷, 多孔陶瓷, 微波吸收

Abstract: Microwave absorbing property of SiC reticulated porous ceramics(RPCs) was investigated in the present work.
The microwave absorbing efficiency of SiC RPCs was found to increase remarkably, compared with that of SiC materials without reticulated porous
structure. This is contributed mainly to the complex electromagnetic reflecting, scattering, and interference effects within the reticulated
structure. Effects of pore size, relative density and sample thickness on the microwave absorbing property of SiC RPCs were discussed. This work
will develop a novel approach for the design and manufacture of structural microwave absorbing materials with high performance and low cost.

Key words: silicon carbide, reticulated ceramics, porous ceramics, microwave absorption

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