Hot-Pressed Sintered SiC-Based Composites for Microwave Absorbing Application

Abstract:

In recent years, with the development of the stealthy and anti-stealthy system, the electromagnetic pollution increasing, microwave absorbing materials with thermal resistance and wide absorption band have been the one of the hotpots in functional materials. Silicon Carbon as a semiconductor material having unique mechanical properties and high temperature stability, is one of the preferred absorbing materials. In this paper, we used silicon carbide, barium titanate and barium ferrite as the raw materials, which belongs to the absorbing mechanisms of resistance loss, dielectric loss and magnetic loss, respectively. The composites were sintered by hot pressed sintering method, and characterizated by XRD, DTA-TG and SEM techniques. XRD results showed that Ba₂TiSi₂O₈ was turn up in the sintering composite materials, and the SEM-EDS photograph was clearly observed that Ba₂TiSi₂O₈ whisker were equally distributed on the surface of silicon carbide. we can assumed that the SiC matrix complex absorbers may be promising candidate for microwave absorption materials with strong-absorption, light-weight, wide-band properties.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 1111-1114
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.1111
• Online since: June 2012
• Authors: Qian Fei Han, Bing Bing Fan, Xiang Qian Ren, Hao Chen, Biao Zhao, Hui Zhou, Ray Zhang
• Keywords: Hot-Pressed Sintering, Microwave Absorbing Material, Silicon Carbide (SiC)

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