There is disclosed a honeycomb structure which is useful as a trapping
filter for an exhaust gas, above all a diesel particulate filter (DPF)
for trapping particulate matters (particulates) in an exhaust gas from a
diesel engine and in which internal and external temperature rises are
uniformed during use and during regeneration and in which there are
effectively prevented generation of defects such as cracks due to a
thermal stress and generation of an adverse influence on a carried
catalyst. A honeycomb structure 1 includes: a bonded honeycomb segment
article 10 in which bond surfaces of a plurality of honeycomb segments 2
are integrally bonded to one another via bonding material layers 9; and
an outer peripheral coating layer 4 which coats an outer peripheral
surface of the bonded honeycomb segment article 10. The honeycomb
structure has a structure in which a plurality of cells 5 forming fluid
channels are arranged in parallel with one another in a central axis
direction. The honeycomb segments 2 are bonded via the bonding material
layers (partial bonding material layers) 9 disposed only in predetermined
portions of the honeycomb segments 2.