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Preparation and Dielectric Properties of SiO2 Coated BZT Composite Powders

ZHENG Zhanshen, HE Panpan, YAN Shuhao, LI Yuanliang, HOU Xiaoyu
(Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and Engineering, North China
University of Science and Technology, Tangshan 063009, Hebei, China)

Abstract: SiO2-BaTi0.9Zr0.1O3+0.5mol%Yb2O3 (SiO2-BZT) composite powder was prepared by liquid-phase cladding process. EDS detected the Si peak. XRD results showed that with the increase of the amount of SiO2, SiO2 entered the grains and produced a new phase Ba2TiSi2O8. SEM results indicated that, SiO2 encapsulation refined grains to some extent. With the increase in coating amount, dielectric-temperature characteristics were improved.

Key words: barium zirconate titanate; doping; liquid-phase cladding; dielectric properties; dielectric-temperature characteristics.

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