Electromagnetic and wave absorbing properties of Fe-doped polymer-derived SiCN ceramics

被引：21
作者：
Wang, Youzhi [1 ,2 ]
Feng, Yurun [3 ]
Guo, Xue [3 ]
Liu, Yu [3 ]
Gong, Hongyu [3 ]
机构：
[1] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 250061, Peoples R China
[2] Shandong Univ, Sch Civil Engn, Jinan 250061, Shandong, Peoples R China
[3] Shandong Univ, Key Lab Liquid Solid Evolut & Proc Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China
来源：
RSC ADVANCES | 2017年 / 7卷 / 73期
基金：
中国国家自然科学基金;
关键词：
LITHIUM-ION BATTERIES; ABSORPTION PROPERTIES; DIELECTRIC-PROPERTIES; CARBONITRIDE; TEMPERATURES; NANOPARTICLES; BEHAVIOR; RESIST;
D O I：
10.1039/c7ra09399c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
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.
引用
收藏
页码：46215 / 46220
页数：6
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