Preparation of Barium Strontium Titanate Ceramics via Combustion Method

Theerachai Bongkarn; C. Wicheanrat

doi:10.4028/www.scientific.net/AMR.55-57.185

Paper Titles

Effect of ZrO₂ Doping on Crystal Structure, Microstructure and Phase Transition of Lead Titanate Ceramics
p.169

Fabrication of Barium Stannate Tatanate Ceramics via Combustion Technique
p.173

The Effect of Excess PbO on Crystal Structure and Microstructure of (Pb_0.925Ba_0.075)TiO₃ Ceramics
p.177

The Preparation of Barium Stannate Titanate Ceramics via Solid State Reaction Method
p.181

Preparation of Barium Strontium Titanate Ceramics via Combustion Method
p.185

Effect of MnO₂ Impurity on the PZT-PMN System Ceramics for Piezoelectric Transformer
p.189

Effect of Excess PbO on Crystal Structure, Microstructure and Phase Transition of Lead Titanate Ceramics
p.193

Effects of Calcination Temperatures on Phase and Morphology Evolution of (Ba_0.25Sr_0.75)(Zr_0.75Ti_0.25)O₃ Powders Synthesized via Solid-State Reaction and Combustion Technique
p.197

Phase Formation and Microstructure of PBZT Powders Prepared via Mixed Oxide Method
p.201

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Preparation of Barium Strontium Titanate Ceramics via Combustion Method

Abstract:

This study concentrated on the crystal structure and microstructure of [(Ba0.75Sr0.25)TiO3; (BST)] ceramics at different firing temperatures. The BST powders were prepared by a combustion method. (CO(NH2)2) was used as a fuel. Crystallinity of the calcined powders was improved by increasing the calcining temperature, as indicated by the increase in intensity of the X-ray diffraction peak. The pure perovskite phase of BST powders was obtained with a calcinations condition of 1200 oC. The a axis lattice constant of BST calcined powders and sintered ceramics were calculated and it was found that the crystal structure is a cubic phase. The microstructure of BST calcined powders and sintered ceramics were analyzed by a scanning electron microscope (SEM). The SEM result indicated that the average particle size and average grain size increased with the increase of calcinations and sintering temperatures, respectively. The apparent density of the samples was measured by the Archimedes method.