Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Patent
1992-05-29
1994-06-21
Lesmes, George F.
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
501 97, C04B 3552, C04B 3558
Patent
active
053228251
ABSTRACT:
An improved fiber reinforced glass composite includes a refractory fiber in a matrix of a nitrogen-containing black glass ceramic having the empirical formula SiN.sub.z C.sub.x O.sub.y where x ranges from greater than zero up to about 2.0, preferably 0.1 to 1.0, y ranges from 0.5 up to about 3.0, preferably 0.7 to 1.8, and z ranges from above zero up to about 1.5, preferably 0.2 to 1.0. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group. The cyclosiloxane monomers are polymerized and then pyrolyzed in an ammonia-containing atmosphere to produce the nitrogen-containing black glass (silicon oxycarbonitride).
REFERENCES:
patent: 4460638 (1984-07-01), Haluska
patent: 5051215 (1991-09-01), Rabe
patent: 5128494 (1992-07-01), Blum
Prewo et al., Ceramic Bulletin, vol. 65, No. 2, 1986.
Gonczy Stephen T.
Leung Roger Y.
Nebo Jon F.
Allied-Signal Inc.
Boldingh Mary Jo
Fuchs Gerhard H,.
Lesmes George F.
Raimund Chris
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