Ceramic filter for exhaust gas purification

摘要

A ceramic filter assembly integrated by adhering together a plurality of columnar honeycomb filters made of a porous ceramic sintered material with a ceramic sealing material layer and having a generally elliptical cross sectional shape when cut parallel to end faces of the plurality of honeycomb filters, the ceramic filter assembly characterized in that the ceramic sealing material layer includes a first sealing material layer (15a,G1) parallel to the major axis of the assembly and a second sealing material layer (15b,G2) orthogonal to the major axis of the assembly, the first sealing material layer having thermal conductivity that is lower than the thermal conductivity of the second sealing material layer.