Paper Title:
Preparation and Microwave-Absorption Property of SiO2-SiC-Based Composites
  Abstract

SiO2-SiC composite particles were prepared using a sol-gel process. BaTiO3 powders were synthesize through solid-state reaction. They were mixed as microwave absorbents with Fe3O4 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 SiO2-SiC-based composites. The effects of the aborbents’ contents on the reflection of the microwave absorption materials were disscussed. It was found that SiO2-SiC composites could be prepared using sol-gel process and BaTiO3 powders could be synthesize through solid-state reaction. The results indicated that SiO2-SiC composite is contribute to absorb microwave, where SiO2-SiC: BaTiO3: Fe3O4 = 6:2:2 (vol %), the frequency region in which the maximum reflectivity is more than -10 dB is 5.4-7.6 GHz.

  Info
Periodical
Key Engineering Materials (Volumes 434-435)
Edited by
Wei Pan and Jianghong Gong
Pages
231-234
DOI
10.4028/www.scientific.net/KEM.434-435.231
Citation
L. Guan, B. B. Fan, M. L. Li, H. J. Wen, K. Li, H. L. Wang, D. L. Chen, R. Zhang, "Preparation and Microwave-Absorption Property of SiO2-SiC-Based Composites", Key Engineering Materials, Vols. 434-435, pp. 231-234, 2010
Online since
March 2010
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$32.00
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