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Low-Temperature Firing and Microwave Dielectric Properties of Zn3Nb2O8 Ceramics with CuO-V2O5-Bi2O3

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Abstract:

The influence of CuO-V2O5-Bi2O3 addition on the sintering behavior, phase composition, microstructure and microwave dielectric properties of Zn3Nb2O8 ceramics were investigated. The co- doping of CuO, V2O5 and Bi2O3 can significantly lower the sintering temperature of Zn3Nb2O8 ceramics from 1150°C to 900°C. The Zn3Nb2O8-0.5wt% CuO-0.5wt% V2O5-2.0wt% Bi2O3 ceramic sintered at 900°C showed a relative density of 97.1%, a dielectric constant (εr) of 18.2, and a quality factor (Q×f) of 36781 GHz. The dielectric properties in this system exhibited a significant dependence on the relative density, content of additives and sintering temperature. The relative density and dielectric constant (εr) of Zn3Nb2O8 ceramics increased with increasing CuO-V2O5-Bi2O3 additions. And also the relative density and dielectric constant of Zn3Nb2O8 ceramics increased by the augment of the sintering temperature.

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Periodical:

Key Engineering Materials (Volumes 434-435)

Pages:

224-227

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.434-435.224

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Online since:

March 2010

Authors:

Xu Ping Lin, Jing Tao Ma, Bao Qing Zhang, Ji Zhou

Keywords:

Bi2O3, LTCC, Microwave Dielectric Ceramics, Zn3Nb2O8

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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