Silicon nitride ceramic having high fatigue life and high toughn

Details Silicon nitride ceramic having high fatigue life and high toughn Silicon nitride ceramic having high fatigue life and high toughn

1995-03-10

1996-08-13

Jones, Deborah

Compositions: ceramic

Ceramic compositions

Refractory

501 97, 501152, C04B 3558

Patent

active

055455972

ABSTRACT:
A sintered silicon nitride ceramic comprising between about 0.6 mol % and about 3.2 mol % rare earth as rare earth oxide, and between about 85 w/o and about 95 w/o beta silicon nitride grains, wherein at least about 20% of the beta silicon nitride grains have a thickness of greater than about 1 micron.

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