摘要 |
A honeycomb structure as a substrate for a catalyst has at least one partially melted surface on an outer surface of the structure. A roughness of the melted surface is coarser than other surfaces. With the coarse surface, shifting of the honeycomb structure in through-aperture directions and rotation about its axis are prevented, thereby enhancing the reliability of a catalyst converter incorporating the honeycomb structure therein. A method of producing the honeycomb structure includes steps of, after extruding a ceramic batch into a honeycomb structure, drying the extruded honeycomb structure, attaching a chemical compound having a low melting point at a predetermined position onto an outer wall surface of the dried honeycomb structure, and firing the structure to melt at least a part of the outer wall surface, thereby obtaining the honeycomb structure having a melted portion whose roughness is coarser than the other surfaces of the outer wall. |
申请人 |
NGK INSULATORS, LTD., NAGOYA, AICHI, JP |
发明人 |
HORIKAWA, OSAMU, TOYOAKE CITY AICHI PREF., JP;HARADA, TAKASHI, MIZUHO-KU NAGOYA CITY AICHI PREF., JP;IKESHIMA, KOICHI, OKAZAKI CITY AICHI PREF., JP |