Ceramic articles made of compositions containing borides and nitrides
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 25, 1995
Grant Date -
N/A
app pub date -
Dec 23, 1993
filing date -
Dec 23, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A composition is described for hard sintered ceramic articles having densities which are 97% or higher than the theoretical density. The composition contains up to 98.5 vol. % titanium diboride, 0-59 vol % aluminum nitride, 0-59 vol. % hexagonal boron nitride, 0-59 vol. % zirconium nitride, and in addition, zirconia, hafnia or ceria having particle size 0.7 .mu.m or less, in 1.5 vol. % and optionally, a sintering aid in less 2 vol. %. The mixture of the above components is further mixed and ground by ball-milling and vibro-milling in the presence of an aliphatic alcohol, cast into required shapes and sintered in an inert gas at temperatures below 1950.degree. C. The sintered ceramic articles obtained of this composition include ceramic cutting tool inserts, impact-resistant ceramic structures, nozzles, extrusion dies and ceramic evaporating boats.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully