Title :
Effect of borosilicate glass on the fabrication and properties of Ba0.3Sr0.7TiO3 ceramics
Author :
Hao, Hua ; Guo, Lu ; Liu, Hanxing ; Li, Yiqiu ; Cao, Minghe
Author_Institution :
State Key Lab. of Adv. Technol. for Mater., Synthesis & Process., Wuhan Univ. of Technol., Wuhan, China
Abstract :
In this paper, zinc borosilicate glasses (ZnO-B2O3-SiO2) were added to Ba0.3Sr0.7TiO3 (BST) ceramics, to determine the role of glass additives on the dielectric properties and energy storage density of BST. Microstructure, relative density, dielectric properties and the breakdown strength (BDS) were investigated. The dependence of permittivity and BDS on the glass composition were discussed. The results indicate that the relative density of BST ceramics with glass additions can be greatly improved because of the glass liquid phase formation during sintering. The BDS was found to increase remarkably by sacrificing the dielectric permittivity. The BST ceramics with 6 wt% ZBS3(40mol%ZnO-35mol%B2O3 -25mol%SiO2) glass were found to possess optimal properties, with BDS~26.7 kV/mm and energy density ~1.5 J cm-3.
Keywords :
barium compounds; borosilicate glasses; composite materials; crystal microstructure; electric breakdown; energy storage; permittivity; sintering; strontium compounds; zinc compounds; Ba0.3Sr0.7TiO3-ZnO-B2O3-SiO2; ceramics; composite materials; dielectric breakdown strength; dielectric permittivity; dielectric properties; energy storage density; glass composition; glass liquid phase formation; microstructure; relative density; sintering; zinc borosilicate glasses; Ceramics; Dielectric losses; Electric breakdown; Glass; Permittivity; Powders; BST; breakdown strength; energy density; glass additions;
Conference_Titel :
Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp
Conference_Location :
Aveiro
Print_ISBN :
978-1-4673-2668-1
DOI :
10.1109/ISAF.2012.6297806
