Title: Non-equilibrium cordierite-alumina

Abstract: Non-equilibrium sintered ceramics, having a matrix composition near stoichiometric cordierite and undissolved intermediate size alumina particles distributed throughout the matrix, display increased temporary use temperatures over the matrix composition by itself without physical deformation associated with melting. Thermal expansion of the non-equilibrium composition is not excessively higher than the cordierite matrix if the proper size alumina is used.

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Inventors: Winkler, Ernel R. (Scottsdale, AZ, US)

Application Number: 669689
Filing Date: 1976-03-23
Publication_date: 1977-07-05
Assignee: Corning Glass Works (Corning, NY)
Primary Class(es): 501/119 501/153
Other Classes:
US Patent Ref:

3450546	Jun, 1969	Stong	106/39.
3849145	Nov, 1974	Pitha	106/39.
3885977	May, 1975	Lachman et al.	106/73.
3950175	Apr, 1976	Lachman et al.	106/62.
3979216	Sep, 1976	Fritsc, Jr. et al.	106/73.

Other Refs:
Primary Examiner: Douglas, Winston A.
Assistant Examiner: Bell, Mark
Attorney: Wardell; Richard N., Patty, Jr.; Clarence R.