Compositions: ceramic – Ceramic compositions – Refractory
Reexamination Certificate
2005-01-18
2005-01-18
Group, Karl (Department: 1755)
Compositions: ceramic
Ceramic compositions
Refractory
C501S090000, C501S092000
Reexamination Certificate
active
06844282
ABSTRACT:
The present invention provides a silicon nitride based sintered body having excellent mechanical properties from room temperature to a medium low temperature range, a low friction coefficient and excellent wear resistance. The sintered body comprises silicon nitride, titanium compounds and boron nitride or silicon nitride, titanium based nitride and/or carbide, silicon carbide and graphite and/or carbon; and has a mean particle diameter of 100 nm or less and a friction coefficient under lubricant free conditions of 0.3 or less.
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Group Karl
Sumitomo Electric Industries Ltd.
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