Ceramic honeycomb structural bodies

摘要

A ceramic honeycomb structural body having a high strength wherein the outer peripheral portion including an outer peripheral wall or a part extending from the end surface of the honeycomb body has a smaller porosity than the other portion. Such a ceramic honeycomb structural body is produced by filling pores in the above defined portion of the honeycomb body with a ceramic material having a smaller porosity than the ceramic honeycomb body material.