Patent Number: 6,254,822

Title: Production of porous mullite bodies

Abstract: Porous sintered ceramic materials having mullite as its primary phase and a method for producing them. The method includes preparing a plasticizable raw material mixture comprised, by weight, of 75-99% of the mullite powder and 1.0 to 25% of the water swelling clay and 5-25% of the alumina and/or alumina-yielding precursor, adding an organic binder system to the mixture and mixing the mixture to form an extrudable mixture, and extruding the mixture to form a substrate of the desired configuration. The green body is dried and fired for a time and at temperature sufficient to form a sintered mullite structure having an acid/base exposure strength loss of less than about 20%.

Inventors: Brundage; Kevin R. (Corning, NY)

Assignee: Corning Incorporated

International Classification: C04B 35/18 (20060101); C04B 35/185 (20060101); C04B 38/06 (20060101); B28B 003/20 ()

Expiration Date: 07/03/2018