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

1993-10-14

1996-05-21

Jones, Deborah

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

501 97, 501 98, 264 66, F27D 700

Patent

active

055186734

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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