WEI Zihan 1, PENG Yuqing 1, KANG Zhiwei 1, LI Zhiwei 1, LI Aijun 1, LI Zhaoqian 2
(1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China; 2. Shanghai Aerospace Equipment Manufacturing Co., Ltd, Shanghai 200245, China)
Abstract: Polymer-derived silicon carbide (SiC) ceramics have excellent properties, such as low density, high strength, high temperature oxidation resistance and adjustable dielectric properties. It is a potential high temperature radar absorbing material and an important stealth material for new weapons. Electromagnetic wave absorption mechanisms of SiC was described first, while microstructural evolution of polymer-derived silicon carbide (PDCs-SiC) ceramics with pyrolysis temperature and the influence on microwave absorbing performances were then introduced. The introduction of magnetic loss and dielectric loss to enhance the microwave absorbing properties of PDCs-SiC were summarized and their future development was prospected.
Key words: microwave absorbing material; PDCs-SiC ceramics; dielectric loss