Joining material and silicon carbide based honeycomb structure

A joining material used for joining side surfaces of a plurality of silicon carbide-based honeycomb segments to each other to produce a silicon carbide-based honeycomb structure, the joining material containing from 0.1 to 50% by mass of processed powder generated in the production of the silicon carbide-based honeycomb segments and/or the silicon carbide-based honeycomb structure, the joining material having an average particle diameter D50 of from 0.5 to 60 μm;

• wherein the processed powder has a particle size D90 of from 4 to 150 μm in a cumulative particle diameter distribution on a volume basis;
• wherein the processed powder has a particle size D10 of from 0.1 to 10 μm in the cumulative particle diameter distribution on the volume basis;
• wherein the joining material contains from 0.1 to 8% by mass of a pore former;
• wherein the processed powder is a composite material of silicon carbide powder and metallic silicon;
• and
• wherein the joining material is a pasty joining material when joining the side surfaces of the plurality of silicon carbide-based honeycomb segments.