Ngk Insulators, Inc.

Yuuichirou Tabuchi

Shinji Kawasaki

Masahiro Furukawa

Kenji Morimoto

Nobuyuki Tanahashi

A silicon carbide-based porous material is provided, including silicon carbide particles as an aggregate, metallic silicon and an oxide phase containing Si, Al and an alkaline earth metal. The silicon carbide-based porous material is high in porosity and strength and superior in oxidation resistance and thermal shock resistance and, when used as a filter, has a very low risk of fluid leakage causing defects such as cuts and the like, as well as a low pressure loss.

Silicon carbide based porous material and method for production thereof

A ceramic porous body is provided, inclusing a plurality of pores formed in a ceramic substrate at a specified porosity. A pore part is discriminated from a non-pore part by binarizing a cross-sectional plane image of the substrate by image analysis. When a center line passing the central part of the pore part is drawn, the porosity (&#x3b5; (%)), a mean width (D(&#x3bc;m)) of the pore part represented by a mean value of a distance, between outlines specifying the pore part, perpendicular to the center line, a mean length (L (&#x3bc;m)) of the pore part represented by a mean value of a length of the center line between adjacent branch points and a length of the center line between an end of the center line and the branch point, and a mean pore size (D(&#x3bc;m)) satisfy a specified relationship.

Ceramic porous body and method for evaluating its permeability

A silicon carbide-based porous material characterized by comprising silicon carbide particles as an aggregate, metallic silicon and an oxide phase containing Si, Al and an alkaline earth metal; it is high in porosity and strength and superior in oxidation resistance and thermal shock resistance and, when used as a filter, is very low in risk of having defects such as cuts (which cause leakage of fluid) and the like, as well as in pressure loss.

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Nagoya, Japan

Yuuichirou Tabuchi