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US08343252B2 Honeycomb filter 失效
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Honeycomb filter
Abstract:
A honeycomb filter 20 includes a plurality of porous partition portions 22 forming a plurality of cells 23 serving as channels of fluid and trapping layers 24 that are formed on the partition portions and configured to trap a solid component contained in the fluid. In the honeycomb filter 20, a predetermined trapping region present on the partition portions 22 satisfies that, in an inscribed-circle-diameter distribution obtained by dividing an image of the partition portions captured with an electron microscope into a material region and a plurality of pore regions and by drawing maximum inscribed circles individually inscribed in the pore regions, a median pore diameter D50 is 1 μm or more and 6 μm or less and a median pore diameter D80 is 1 μm or more and 7 μm or less, and an inscribed-circle porosity determined from the inscribed-circle-diameter distribution is 35% or more and 60% or less.
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