公开(公告)号：US11858857B2

公开(公告)日：2024-01-02

申请号：US18037696

申请日：2022-03-23

Applicant: PROTERIAL, LTD.

Inventor： Kenichiro Shimizu

IPC: C04B35/565 ,  C04B35/636 ,  F01N3/28 ,  B01D46/24 ,  C04B35/626 ,  C04B35/64 ,  F01N3/022 ,  B01D39/20 ,  C04B38/00

CPC classification number: C04B35/565 ,  B01D39/2068 ,  B01D46/2429 ,  B01D46/24491 ,  B01D46/24492 ,  C04B35/62655 ,  C04B35/6365 ,  C04B35/64 ,  C04B38/0009 ,  F01N3/0222 ,  F01N3/2828 ,  B01D2239/10 ,  B01D2239/1208 ,  B01D2239/1216 ,  B01D2279/30 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3826 ,  C04B2235/6021 ,  C04B2235/656 ,  C04B2235/6583 ,  F01N2330/06 ,  F01N2330/32 ,  F01N2330/48 ,  F01N2370/04

Abstract: A silicon carbide ceramic honeycomb structure having large numbers of axially penetrating flow paths partitioned by porous silicon carbide cell walls, the cell walls comprising silicon carbide particles as aggregate and binder layers for binding the silicon carbide particles, the binder layers having at least a cordierite phase and a spinel phase, and the molar ratio M1 of the cordierite phase [=cordierite phase/(cordierite phase+spinel phase)] being 0.4-0.9.

公开(公告)号：US12187650B2

公开(公告)日：2025-01-07

申请号：US18640593

申请日：2024-04-19

Applicant: PROTERIAL, LTD.

Inventor： Kenichiro Shimizu

IPC: C04B35/565 ,  C04B35/63 ,  C04B38/00

Abstract: A silicon carbide ceramic honeycomb structure having large numbers of axially penetrating flow paths partitioned by porous silicon carbide cell walls and being formed by integrally bonding honeycomb segments by binder layers, the cell walls having porosity of 40-50% and a median pore diameter of 8-18 μm, an average pore width W determined by averaging the lengths (pore widths) of all measured pore portions being 10-25 μm, the number N of pores per length determined by dividing the total number of the measured pores by the total length of the straight lines used for measurement being 20-40/mm, and the volume of pores having pore diameters of 20 μm or more being 10-20% of the total pore volume in the cell walls and the volume of pores having pore diameters of 9 μm or less being 3-25% of the total pore volume in the cell walls, measured by mercury porosimetry.

公开(公告)号：US11993545B2

公开(公告)日：2024-05-28

申请号：US18037677

申请日：2022-03-23

Applicant: PROTERIAL, LTD.

Inventor： Kenichiro Shimizu

IPC: C04B35/565 ,  C04B35/63 ,  C04B38/00

CPC classification number: C04B35/565 ,  C04B35/6303 ,  C04B38/0009 ,  C04B38/0054 ,  C04B38/0074 ,  C04B2235/3826 ,  C04B2235/6021 ,  C04B2235/606

Abstract: A silicon carbide ceramic honeycomb structure having large numbers of axially penetrating flow paths partitioned by porous silicon carbide cell walls, the cell walls having porosity of 35-50% and a median pore diameter of 8-18 μm, when a straight line C is drawn in parallel with the cell wall surface such that it passes a center in the direction of the thickness T of the cell wall, and straight lines are drawn in parallel with the straight line C such that they are separate from the straight line C by ±T/5 and ±2T/5 in the thickness direction of the cell wall, to measure the lengths (pore widths) of pore portions crossing each straight line, and the number of pores crossing each straight line, in a cell wall cross section perpendicular to the axial direction, an average pore width W determined by averaging the lengths (pore widths) of all measured pore portions being 10-25 μm, and the number N of pores per length determined by dividing the total number of the measured pores by the total length of the straight lines used for measurement being 20-40/mm.