Ceramic powders
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United States of America Patent
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Mar 23, 1993
Grant Date -
N/A
app pub date -
Jun 13, 1991
filing date -
Oct 13, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preparing ceramic powders suitable for pressing into articles comprises the dispersing of a particulate ceramic, preferably of particle size below 1 .mu.m, in water in the presence of ammonia or an alkylamine having a boiling point below that of water and spray - drying the dispersion to give powders. The process is particularly applicable to zirconia and gives rise to fine, free-flowing powders which can be processed into articles of uniform density.
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