| 摘要 |
A honeycomb having an inlet cell with a higher opening ratio than an outlet cell, in which occurrence of cracks is effectively suppressed. A honeycomb structure (1) has columnar honeycomb segments (3) each formed by arranging side by side two kinds of through-holes (4 (4a, 4b), 5 (5a, 5b)) with partition walls (6) in between, and the through-holes have different end surface areas. At one end of a honeycomb segment (3), the through-holes (5b) having smaller end face areas are sealed to form the inlet side having a higher opening ratio, and at the other end, the though-holes (4b) having larger end face areas are sealed to form the outlet side having a lower opening ratio. The honeycomb segments (3) are secured to each other through joint materials (2) with the orientation in the longitudinal direction of the honeycomb segments (3) aligned. The Young's modulus of the joint materials (2) when they are sintered is lower than the Young's modulus of the honeycomb segments (3) when they are sintered. The joint width of the joint materials at the inlet side end face is greater than the joint width of the joint materials on the outlet side end face. |
