Preparation and microwave dielectric properties of Li2O-Al2O3-SiO2 glass-ceramic used as an impedance transfer layer of microwave absorbing materials

Fa Luo, Wan Cheng Zhou, Huan Jiao, Dong Lin Zhao

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

The low thermal expansion coefficient and the moderate permittivity of Li2O-Al2O3-SiO2 glass-ceramic make it possible to be used as an impedance transfer layer of radar wave absorbing materials to increase the microwave absorbing efficiency and expand absorbing bands. But a series of accurate permittivities of impedance transfer are needed to meet the impedance matching design. Therefore, the relationship between the permittivity of the glass-ceramic and sintering conditions was studied. The results show that the real and imaginary parts of the permittivity of the glass-ceramic increase with the sintering densities, and no frequency dependency of the permittivity was found. The reflectivity-frequency curves illustrate that the attachment of the glass-ceramic to the microwave absorbing materials greatly reduces the materials' reflectivity to microwave and a little change of the permittivity of the glass-ceramic can also exert a remarkable influence on microwave absorbing materials. So an expected permittivity of the glass-ceramic is needed and can be obtained by varying sintering conditions of the glass-ceramic.

源语言英语
页(从-至)273-277
页数5
期刊Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica
24
3
出版状态已出版 - 5月 2003

指纹

探究 'Preparation and microwave dielectric properties of Li2O-Al2O3-SiO2 glass-ceramic used as an impedance transfer layer of microwave absorbing materials' 的科研主题。它们共同构成独一无二的指纹。

引用此