Corning Incorporated
REDUCED ANISOTROPY ALUMINUM TITANATE-CORDIERITE CERAMIC BODIES, BATCH MIXTURES INCLUDING SPHERICAL ALUMINA, AND METHODS OF MANUFACTURING CERAMIC BODIES THEREFROM

Abstract:

A ceramic honeycomb body exhibiting a primary phase of aluminum titanate solid solution with a pseudobrookite structure, and a secondary phase of cordierite. The ceramic honeycomb body contains the aluminum titanate solid solution in an amount greater than or equal to 50 wt. % and cordierite in an amount greater than or equal to 20 wt. %. Low anisotropy is demonstrated by the primary phase of aluminum titanate solid solution by comprising an AT tangential/axial i-ratio.ltoreq.1.35. Batch mixtures including spherical alumina and methods of manufacturing ceramic honeycomb bodies using the batch mixtures with spherical alumina are provided, as are other aspects.