材料科学技术（英文）,
2013, 29(1): 55-58.
1,
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2,
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3,
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4,
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5,
1.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
2.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
3.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
4.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
5.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
基金项目:
the 111 Project(B08040)
This work was financially supported by the National Natural Science Foundation of China(50972119 and 51002120)
the fund of the State Key Laboratory Of Solidification Processing in Northwestern Polytechnical University(KB200920)
Dielectric and Electromagnetic Wave Absorbing Properties of Two Types of SiC Fibres with Different Compositions
Fang Ye
1,
, Litong Zhang
2,
, Xiaowei Yin
3,
, Yongsheng Liu
4,
, Laifei Cheng
5,
1.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
2.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
3.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
4.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
5.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University,Xi'an 710072, China; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
Keywords：
SiC fibre
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.
参考文献
| [1] |
K. Lakshmi;Honey John;K.T. Mathew .Microwave absorption, reflection and EMI shielding of PU-PANI composite[J].Acta materialia,2009(2):371-375. |
| [2] |
T.D.Zhou,D.F.Liang,L.J.Deng,D.C.Luan.Electron Structure and Microwave Absorbing Ability of Flaky FeSiAI Powders[J].材料科学技术学报（英文版）,2011(02):170-174. |
| [3] |
E. Tan;Y. Kagawa;A. F. Dericioglu .Electromagnetic wave absorption potential of SiC-based ceramic woven fabrics in the GHz range[J].Journal of Materials Science,2009(5):1172-1179. |
| [4] |
D.D.L.Chung .Electromagnetic interference shielding effectiveness of carbon materials[J].Carbon: An International Journal Sponsored by the American Carbon Society,2001(2):279-285. |
| [5] |
R. Naslain .Design, preparation and properties of non-oxide CMCs for application in engines and nuclear reactors: an overview[J].Composites science and technology,2004(2):155-170. |
