| 摘要 |
A honeycomb structured body of the present invention includes plural pillar-shaped honeycomb units which are bonded to one another through sealing material layers, each unit having in the longitudinal direction a large number of cells placed in parallel with a cell wall therebetween, wherein each honeycomb unit includes inorganic fibers and/or whiskers in addition to inorganic particles, a cross-sectional area of the honeycomb unit on a cross section perpendicular to the longitudinal direction is set to at least about 5 cm2 and at most about 50 cm2, and a coefficient αL of thermal expansion of the sealing material layer and a coefficient αF of thermal expansion of the honeycomb unit satisfy the following relationship: about 0.01≦̸|αL−αF|/αF≦̸about 1.0.
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