Electromagnetic interference shielding and dielectric properties of SiCf/SiC composites containing pyrolytic carbon interphase
Electromagnetic interference shielding and dielectric properties of SiCf/SiC composites containing pyrolytic carbon interphase
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DOI：
10.1016/j.carbon.2013.03.061
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发表时间：
2013-08-01
期刊：
影响因子：
10.9
通讯作者：
Chen, Jin
中科院分区：
文献类型：
--
作者：
Ding, Donghai;Shi, Yimin;Chen, Jin
制备了含有不同厚度热解碳(PYC)界面层的SiCf/SiC复合材料，研究了它们在8.2~12.4 GHz频率范围内的电磁屏蔽性能。含310 nm厚度(3.3%)PYC界面相的复合材料在整个频段的屏蔽效能约为25dB。有趣的是，随着PYC界面厚度的增加，反射对EMI屏蔽效果的贡献增加，而吸收的贡献减少。(C)2013爱思唯尔有限公司。保留所有权利。
The SiCf/SiC composites containing various thickness of pyrolytic carbon (PyC) interphase were prepared and their properties were investigated for electromagnetic interference (EMI) shielding applications in the frequency of 8.2-12.4 GHz. The composites containing 310 nm thickness (3.3 vol%) PyC interphase show an about 25 dB shielding effectiveness in the whole frequency band. Interestingly, the contribution of reflection to the EMI shielding effectiveness increases and the contribution of absorption decreases as the PyC interphase thickness increases. (C) 2013 Elsevier Ltd. All rights reserved.