Wave absorbing performance of polymer-derived SiCN(Fe) ceramics. Issue 17 (1st December 2017)

• Record Type: Journal Article
• Authors: Wang, Youzhi; Guo, Xue; Feng, Yurun; Lin, Xiao; Gong, Hongyu
• Is Part Of: Ceramics international. Volume 43:Issue 17(2017)
• Page Start: 15551
• Page End: 15555
• Publication Date: 2017-12-01
• Subjects: Precursor conversion method -- SiCN ceramic -- Nano-Fe2O3 -- Wave absorbing; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.08.106
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Ferreous polymer-derived SiCN ceramics (PDCs-SiCN(Fe)) were successfully synthesized by precursor conversion method. The phase composition and microstructure of the obtained products were investigated by XRD, SEM and TEM. The result indicated a mainly amorphous structure with a few α-Fe, and graphite phases in the gaps. The conductivity, electromagnetic parameters and wave absorbing properties of the prepared ceramics were studied at the frequency band from 2 to 18 GHz. The reflectance of PDCs-SiCN(Fe) was about −10 dB (> 90% absorption) in the range of 4–16 GHz with 25 wt% nano-Fe2 O3 addition at the thickness 8 mm. The maximum value of dielectric and magnetic loss angle tangent was about 1.5, indicating PDCs-SiCN(Fe) ceramics possessed good absorption performance.