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Phase Evolution and Microwave Dielectric Properites in the Systems of (Mg1-xCax)2SiO4 Ceramics

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Abstract:

In this paper, the microwave dielectric properties in the systems of nominal chemical composition (Mg1-xCax)2SiO4 (0≤x≤0.5)ceramics were investigated, together with their phase evolution. With the increase of x value, the major phase in the ceramic systems gradually changes from Mg2SiO4 to MgCaSiO4, besides with the some secondary phase of MgSiO3 and Ca2MgSi2O7, The relative dielectric constant in the systems of ceramics gradually increased from 6.8 to 8.7. The quality factor of value was well improved, and especially, the absolute value of the ceramic resonant frequency of temperature coefficients was optimized to reach zero, from -61 to +3 . The best optimum chemical composition was equal to 0.4, where the microwave dielectric properties was = 7.2, = 24,170 GHz, = +5 .

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Periodical:

Advanced Materials Research (Volumes 152-153)

Pages:

801-804

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.152-153.801

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Online since:

October 2010

Authors:

Kai Xin Song, Zhi Hua Ying, Liang Zheng, Zheng Liu, Hui Bin Qin

Keywords:

(Mg1-xCax)2SiO4, Ceramic, Microwave Properties

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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