Effect of Silver on the Sintering and Grain-Growth Behavior of Barium Titanate
Resource
Journal of the American Ceramic Society 83 (12): 2988-2992
Journal
Journal of the American Ceramic Society
Journal Volume
83
Journal Issue
12
Pages
2988-2992
Date Issued
2000
Date
2000
Author(s)
Chen, Chin-Yi
Abstract
Silver and its alloys frequently are used as electrode material for BaTiO3-based dielectrics. In the present study, a small amount of fine silver particles have been intimately mixed with BaTiO3 powder. The sintering and grain-growth behavior of the silver-doped BaTiO3 in air are investigated. The solubility of silver in BaTiO3, as revealed by lattice-parameter measurement, electrical measurement, and electron probe microanalysis, is <300 ppm. The densification of BaTiO3 is slowed slightly by the addition of silver inclusions. However, the presence of a small amount (<0.3 wt%) of silver increases the amount and size of abnormal grains. When the silver content is >0.3 wt%, the grain growth of BaTiO3 then is prohibited by the silver inclusions.
Type
journal article
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