| 摘要 |
There is disclosed a honeycomb structure that is useful as a filter for trapping an exhaust gas, in particular, a diesel particulate filter (DPF) for trapping particulate matter (particulates) in an exhaust gas from a diesel engine, that prevents displacement of honeycomb segments during canning or use (under vibration) and that effectively prevents defects such as a crack due to thermal stress during use and regeneration. The honeycomb structure includes a honeycomb segment joined body having a plurality of honeycomb segments 2 joined integrally at respective joining surfaces via a joining material layer 20; and an outer peripheral coating layer covering an outer peripheral surface of the honeycomb segment joined body, the honeycomb structure having such a structure that a plurality of cells acting as fluid passageways are arranged in parallel to each other in the direction of a center axis, wherein sides 11 of a cross-sectional shape of the plurality of honeycomb segments 2 in a direction perpendicular to the center axis direction have a curvature equal to or greater than 1.
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