Honeycomb filter
AssigneeNGK Insulators, Ltd.
InventorsTadato ITO, Sho INOTSUME
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Abstract
A honeycomb filter comprising a pillar-shaped honeycomb structure having a porous partition wall disposed so as to surround a plurality of cells which serve as a fluid through channel extending from an inflow end face to an outflow end face and a porous plugging portion provided at either an end on the inflow end face side or an end on the outflow end face side of the cell, wherein in a processed image obtained by binarizing an electron microscope image of a visual field area of 480 μm×640 μm of the plugging portion, the plugging portion is composed of a plurality of particles, and the number of the particles having an area of 0.25 μm2 or more is 1000 or more and 3500 or less.
Claims5
A honeycomb filter comprising:
- a pillar-shaped honeycomb structure having a porous partition wall disposed so as to surround a plurality of cells which serve as a fluid through channel extending from an inflow end face to an outflow end face;
- and
- a porous plugging portion provided at either an end on the inflow end face side or an end on the outflow end face side of the cell;
- wherein in a processed image obtained by binarizing an electron microscope image of a visual field area of 480 μm×640 μm of the plugging portion, the plugging portion is composed of a plurality of particles, and the number of the particles having an area of 0.25 μm2 or more is 1000 or more and 3500 or less.
Dependencies are inferred from the claim text.