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Particle Orientation During Tape Casting in the Fabrication of Grain‐Oriented Bismuth Titanate
Author(s) -
Watanabe Hidenori,
Kimura Toshio,
Yamaguchi Takashi
Publication year - 1989
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.1151-2916.1989.tb06116.x
Subject(s) - slurry , tape casting , materials science , particle (ecology) , bismuth titanate , composite material , casting , fabrication , particle size , ceramic , metallurgy , grain size , mineralogy , chemical engineering , chemistry , medicine , oceanography , alternative medicine , optoelectronics , pathology , dielectric , engineering , ferroelectricity , geology
Slurries containing platelike Bi 4 Ti 3 O 12 particles have been tape cast to prepare green sheets with aligned particles. The slurries contain well‐dispersed particles and show nearly Newtonian flow behavior. The effect of slurry composition and casting conditions on the particle orientation has been examined. The particle orientation in the green sheet is determined mainly by powder content; other parameters, such as binder content, casting speed, and blade opening, have little effect. The interaction between particles is a main cause for particle alingnment. The slurry with a large powder content is favorable for preparing dense grain‐oriented ceramics.