Reinforced ceramic cutting tools
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United States of America Patent
Stats
-
Oct 9, 1990
Issued Date -
N/A
app pub date -
Oct 26, 1989
filing date -
Mar 14, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Cutting tools are disclosed which are comprised of composite bodies comprising a ceramic matrix reinforced by ceramic whiskers. The ceramic matrix may be alumina or silicon nitride, and may contain toughening components. The whiskers are preferably silicon carbide, but may be other known ceramic whiskers. Whisker content in the composite is 2-40%, with higher contents generally used for tools when the expected service involves interrupted cutting and lower contents generally used for continuous cutting tools.
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