Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1992-10-09
1994-03-29
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
501 92, C04B 3556
Patent
active
052984702
ABSTRACT:
A sintered silicon carbide ceramic body preferably produced from a uniform mixture comprising from about 82 percent to about 99.4 percent by weight silicon carbide, from about 0.5 percent to about 10 percent by weight of a nitrogen containing aluminum compound and from about 0.1 to about 8 percent of a rare earth oxide, both reacted with oxygen, wherein said sintered ceramic body has a density greater than 90% percent of theoretical and a fracture toughness, as measured by a single edge notched beam test, of more than 7 MPam.sup.1/2 and method of making the same.
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Boecker Wolfgang D. G.
Chia Kai Y.
Storm Roger S.
Bell Mark L.
Jones Deborah
McCollister Scott A.
Moxon II George W.
The Carborundum Company
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