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Effect of Silver on the Sintering and Grain‐Growth Behavior of Barium Titanate
Author(s) -
Chen ChinYi,
Tuan WeiHsing
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01671.x
Subject(s) - sintering , materials science , grain growth , barium titanate , electroceramics , barium , scanning electron microscope , grain size , metallurgy , dielectric , mineralogy , electron probe microanalysis , analytical chemistry (journal) , ceramic , composite material , chemistry , fabrication , medicine , microfabrication , alternative medicine , optoelectronics , pathology , chromatography
Silver and its alloys frequently are used as electrode material for BaTiO 3 ‐based dielectrics. In the present study, a small amount of fine silver particles have been intimately mixed with BaTiO 3 powder. The sintering and grain‐growth behavior of the silver‐doped BaTiO 3 in air are investigated. The solubility of silver in BaTiO 3 , as revealed by lattice‐parameter measurement, electrical measurement, and electron probe microanalysis, is <300 ppm. The densification of BaTiO 3 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 BaTiO 3 then is prohibited by the silver inclusions.