PROCESS FOR PRODUCING ALUMINUM-TITANATE-BASED CERAMIC HONEYCOMB STRUCTURE

摘要

A method for producing an aluminum-titanate-based ceramic honeycomb structure comprising blending TiO 2 source powder and Al 2 O 3 source powder with a TiO 2 /Al 2 O 3 molar ratio of 45/55 to 55/45, and a sintering aid and/or a molding aid to prepare a moldable material, extrusion-molding the moldable material, and drying and sintering the resultant extrudate, the TiO 2 source powder having a particle size distribution (mass-based frequency distribution relative to [log (particle size)]), in which both the maximum frequency in a particle size range of 0.2-4 µm and the maximum frequency in a particle size range of 10-100 µm are larger than those in other ranges than the two particle size ranges.