Ngk Insulators, Inc.

Ryuta Kouno

Shuichi Ichikawa

Keisuke Kimura

Atsushi Mizuno

Provided is a porous material which is not easily damaged even when being exposed to a high temperature in a low oxygen atmosphere, and has heat resistance improved. A porous material includes aggregates formed of a nonoxide containing silicon and a binding material formed of an oxide ceramic binding the aggregates to each other while keeping a plurality of pores. The porous material has a phase containing oxygen on a surface of the aggregates including a boundary surface with the binding material. In the porous material, a content ratio of oxygen in the aggregates is preferably from 2 to 25% by mass relative to the mass of the aggregates.

Porous material, method for manufacturing porous material, and honeycomb structure

A honeycomb structure includes honeycomb segments each having a porous partition wall defining a plurality of cells, and includes a porous bonding layer containing a crystalline anisotropic ceramic and disposed so as to bond side surfaces of the honeycomb segments to each other. A ratio of a pore volume (cc/g) of a fine pore defined as a pore in the bonding layer having a pore diameter of 10 &#x3bc;m or more and less than 50 &#x3bc;m with respect to a pore volume (cc/g) of a coarse pore defined as a pore in the bonding layer having a pore diameter of 50 &#x3bc;m or more and 300 &#x3bc;m or less is from 2.0 to 3.5, the pore volume of the fine pore is from 0.15 to 0.4 cc/g, and the pore volume of the coarse pore is from 0.05 to 0.25 cc/g.

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Nagoya, Japan

Ryuta Kouno