Coarse reaction bonded silicon nitride

Details Coarse reaction bonded silicon nitride Coarse reaction bonded silicon nitride

1994-09-14

1996-04-23

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501 97, C04B 3559

Patent

active

055103049

ABSTRACT:
A ceramic comprising:
a) between 20 w/o and 90 w/o unnecked composite grains comprising:
i) between 5 w/o and 100 w/o silicon nitride, and
ii)between 0 w/o and 95 w/o free silicon,
said composite grains having lengths of at least 50 microns and widths of at least 10 microns, and
b) between 10 w/o and 80 w/o matrix grains having lengths of less than 20 microns.

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