Chien-Wei Li - Livingston NJ Jean Yamanis - Morristown NJ Gilbert Carrasquillo - Piscataway NJ
Assignee:
Allied-Signal Inc. - Morris Township, Morris County NJ
International Classification:
C04B 3558
US Classification:
501 97
Abstract:
A monolithic silicon nitride ceramic is densified at temperatures lower than 2000. degree. C. and heat treated at temperatures greater than 2000. degree. C. in the presence of at least 6. 5 w % of multi-component sintering aids. This monolithic silicon nitride has a highly acicular microstructure Chevron Notch fracture toughness greater than 9 MPa. multidot. m. sup. 1/2, R-curve behavior, high Weibull modulus, excellent damage tolerance, high thermal conductivity, and other desirable properties.
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