EFFECT OF SINTERING TEMPERATURE ON DIELECTRIC PROPERTIES OF SIO2 DOPED BATIO3 CERAMICS
Published: 10 Jul 2016
Abstract: SiO2-doped BaTiO3 ceramics were prepared by solid state mixed oxide technique. The effect of small amounts (0.3 mol %) of SiO2 additive on the microstructure, sintering behavior and dielectric properties of BaTiO3-based ceramics have been investigated. SiO2-doped BaTiO3 ceramics sintered at 1175°C, 1200°C and 1225°C for 4h in air atmosphere have been found to exhibit high density and a uniform grain size. A scanning electron microscopy, X-ray diffraction analysis and LCR meters have been used to determine the microstructure, phase analysis and dielectric properties of the SiO2 doped BaTiO3 ceramics. The SiO2 can form a liquid phase belonging to the ternary system BaO-TiO2-SiO2, leading to the formation of BaTiO3 ceramics with high density at the lower sintering temperature, and improves the sintering and dielectric properties of BaTiO3-based ceramics.
Keywords: barium titanate, dielectric properties, microstructure, sintering, sio2
Download full text
Back to the contents of the volume
© 2018 The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/
, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This permission does not cover any third party copyrighted material which may appear in the work requested.