| 摘要 |
There is disclosed a plugged honeycomb structure which can inhibit a temperature rise during use at high temperatures and is excellent in thermal shock resistance. A plugged honeycomb structure 100 includes a pillar-shaped honeycomb structure body 4 having porous partition walls 1 defining a plurality of cells 2 which become through channels for a fluid and extend from a first end face 11 to a second end face 12, and plugging portions 5 disposed in open ends of predetermined cells 2b in the first end face 11 and open ends of residual cells 2a in the second end face 12, and the partition walls 1 are constituted of a porous body including ±-Al 2 O 3 as a main phase and further including cordierite and Y 2 Si 2 O 7 . |
