标题：Electromagnetic and wave absorbing properties of Fe-doped polymer-derived SiCN ceramics
作者：Wang, Youzhi; Feng, Yurun; Guo, Xue; Liu, Yu; Gong, Hongyu
作者机构：[Wang, Youzhi] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 250061, Peoples R China.; [Wang, Youzhi] Shandong Univ, Sch Civil 更多
通讯作者地址：[Feng, YR; Gong, HY]Shandong Univ, Key Lab Liquid Solid Evolut & Proc Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China.
摘要：Fe-doped polymer-derived SiCN ceramics were synthesized by a precursor conversion method with different contents of nano-Fe2O3. The phase composition and microstructure were characterized by XRD, SEM and TEM. The results revealed that alpha-Fe and graphite phases were generated during the synthetic process. The electromagnetic and wave absorbing properties of the Fe-doped SiCN ceramics were analyzed with different amounts of nano-F2O3 over the frequency range of 2-18 GHz. The existence of a-Fe and graphite phases improved the electromagnetic properties of the materials greatly. The reflectance and electromagnetic attenuation coefficient of Fe-doped SiCN ceramics (15 wt% F2O3) reached -11 dB and 325 at 10.5 GHz, respectively, which indicated that the Fe-doped SiCN ceramics possessed excellent absorbing properties.