Dielectric and Electromagnetic Wave Absorbing Properties of Two Types of SiC Fibres with Different Compositions

被引：0
|
作者：
Fang Ye [1 ,2 ]
Litong Zhang [1 ,2 ]
Xiaowei Yin [1 ,2 ]
Yongsheng Liu [1 ,2 ]
Laifei Cheng [1 ,2 ]
机构：
[1] Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University
[2] State Key Laboratory of Solidification Processing, Northwestern Polytechnical University
来源：
Journal of Materials Science & Technology | 2013年 / 29卷 / 01期
基金：
中国国家自然科学基金;
关键词：
SiC fibre; Dielectric; Electrical and magnetic properties;
D O I：
暂无
中图分类号：
TB34 [功能材料];
学科分类号：
080501 ;
摘要：
The dielectric and electromagnetic properties of two types of SiC fibres with different compositions were investigated. The permittivity and electromagnetic shielding effectiveness (SE) of SiC fibre bundles were measured in 8.2-12.4 GHz by waveguide method. The reflection coefficient (RC) of unidirectional SiC fibre laminates was determined in 8-18 GHz using naval research laboratory (NRL)-arc method. Results showed that the electromagnetic wave (EMW) absorbing properties of SiC fibres were correlated with their composition, microstructure and instinct performance of electrical resistance. SiC fibres with higher content and greater size of nano-scale β-SiC showed higher permittivity, conductivity, SE and lower RC, which resulted in their better EMW absorbing ability, i.e. the lower reflection to EMW.
引用
收藏
页码：55 / 58
页数：4
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