Ngk Insulators, Inc.

Hiroaki Noguchi

Mitsuhiro Ito

Akifumi Kawakami

Shuichi Ichikawa

Suguru Kodama

Rui Horimoto

Yuki Jin

Taira Hayakawa

A porous honeycomb structure including cell channels passing through an interior of the porous honeycomb structure and partitioned by porous partition walls, wherein the porous partition walls include skeleton portions containing an aggregate and a bonding material, and pore portions formed among the skeleton portions and through which a fluid can flow; and the porous partition walls have a porosity of 40 to 48% as measured by a mercury intrusion method, and a cumulative 50% pore diameter (D50) from a large pore side of 6 to 10 μm in a volume-based cumulative distribution of pore diameters measured by the mercury intrusion method, and a maximum pore diameter observed with a scanning electron microscope of 40 μm or less, and a ratio of a contact area between the aggregate and the bonding material to a surface area of the bonding material observed with the scanning electron microscope of 61 to 80%.

Porous honeycomb structure and method for manufacturing same

A ceramic porous body comprising: skeleton portions; and pore portions formed between the skeleton portions, the pore portions being capable of allowing a fluid to flow therethrough. In the ceramic porous body, the pore portions satisfy the following equations (1) and (2) in a cross section parallel to a flow direction of the fluid;1/2&#x2265;0.92&#x2003;&#x2003;(1), and1+2&#x2264;27 &#x3bc;m&#x2003;&#x2003;(2)

Ceramic porous body and dust collecting filter

A ceramic porous body comprising: skeleton portions including an aggregate and at least one binding material; and pore portions formed between the skeleton portions, the pore portions being capable of allowing a fluid to flow therethrough. In the ceramic porous body, the pore portions have a pore volume ratio of pores having a pore diameter of from 1 to 10 &#x3bc;m, of 45% or more, and a ratio of a contact area between the aggregate and the binding material to a surface area of the binding material of from 20 to 60%.

Ceramic porous body and method for producing the same, and dust collecting filter

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Nagoya, Japan

Hiroaki Noguchi