Bearings produced from silicon nitride substances containing...

Details Bearings produced from silicon nitride substances containing... Bearings produced from silicon nitride substances containing...

2007-07-17

2007-07-17

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Refractory

C501S097400, C384S492000, C384S907100

Reexamination Certificate

active

11583560

ABSTRACT:
The present invention is directed to bearings produced from a silicon nitride material. The silicon nitride material consists of a sintering aid selected from the group consisting of Al2O3and Y2O3, silicon dioxide, and optionally, up to 10 mole %, based on the amount of silicon nitride, of an additive that reacts with silicon nitride, said additive selected from the group consisting of TiO2, WO3, MoO3and mixtures thereof.

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