Method for Sintering Ceramic Tapes

Flexible Setter powder deposition sheets containing Setter
powders were developed for Sintering of ceramic articles
including tapes by an economical, fast and Simple method.
The sheets provide for deposition of a thin and uniform layer
of Setter powders on a green ceramic article after burnout of
a binder in the sheet. Because of high Strength and low
burnout temperature, hydroxypropyl methylcellulose binder
is preferred for production of these sheets. Tape cast sheets
with low Solids loading can be obtained by optimizing the
wetting behavior of aqueous slurries on tape carrier. Setter,
powder deposition sheets are of particular benefit in pro
cessing of thin ceramic tapes, particularly for processing of
piezoelectric ceramic tapes. Tapes can be processed in a
Sandwich formed by layering Setter powder deposition
sheets between tapes and cover plates employed to maintain
tape flatness and to reduce evaporation of Volatile components of the ceramic.