Paper Title:
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.

  Info
Periodical
Advanced Materials Research (Volumes 55-57)
Main Theme
Edited by
Tawee Tunkasiri
Pages
185-188
DOI
10.4028/www.scientific.net/AMR.55-57.185
Citation
T. Bongkarn, C. Wicheanrat, "Preparation of Barium Strontium Titanate Ceramics via Combustion Method", Advanced Materials Research, Vols. 55-57, pp. 185-188, 2008
Online since
August 2008
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Price
$35.00
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