首页|Preparation and Microwave-Absorption Property of SiO_2-SiC-Based Composites

Preparation and Microwave-Absorption Property of SiO_2-SiC-Based Composites

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  • NSTL
  • Trans Tech Publications Ltd
SiO_2-SiC composite particles were prepared using a sol-gel process. BaTiO_3 powders were synthesize through solid-state reaction. They were mixed as microwave absorbents with Fe_3O_4 powders to obtain the complex absorption. Epoxide resin (EP) was used as matrix and solidified with the mixtures. The techniques of DSC-TG, XRD were used to characterize the composite particles and the obtained compacts. A vector network analyzer was used to measure the reflectivity of the SiO_2-SiC-based composites. The effects of the aborbents' contents on the reflection of the microwave absorption materials were disscussed. It was found that SiO_2-SiC composites could be prepared using sol-gel process and BaTiO_3 powders could be synthesize through solid-state reaction. The results indicated that SiO_2-SiC composite is contribute to absorb microwave, where SiO_2-SiC: BaTiO_3: Fe_3O_4 = 6:2:2 (vol %), the frequency region in which the maximum reflectivity is more than -10 dB is 5.4-7.6 GHz.

microwave-absorbentsSiO_2-SiC compositesreflectivity

Li Guan、Bingbing Fan、Mingliang Li、Hejing Wen、Kai Li、Hailong Wang、Deliang Chen、Rui Zhang

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School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China Suzhou Institute of Nano-tech and Nano-bionics, CAS, Suzhou 215125, China

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou 450015, China

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2010

10.4028/www.scientific.net/KEM.434-435.231

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.434/435
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