Title:
セラミックス多孔質体及びその透過性能評価方法
Document Type and Number:
Japanese Patent JP4805676
Kind Code:
B2
Abstract:
A ceramic porous body having plural pores formed in a ceramic substrate at a specified porosity. A pore part 1 is discriminated from a non-pore part 2 by binarizing a cross-sectional plane image of the substrate by image analysis. When a center line 3 passing the central part of the pore part 1 is drawn, the porosity (µ (%)), a mean width (D P (µm)) of the pore part represented by a mean value of a distance, between outlines specifying the pore part (1), perpendicular to the center line 3, a mean length (L (µm)) of the pore part represented by a mean value of a length of the center line 3 between adjacent branch points 4 and a length of the center line 3 between an end 5 of the center line 3 and the branch point 4, and a mean pore size (D H (µm)) satisfy a specified relation. Used as a member composing a filter, e.g., a DPF, it retains a sufficient strength with a high porosity, high capturing efficiency and high permeability as well.
Inventors:
Furukawa Masahiro
Nobuyuki Tanahashi
Yuichiro Tabuchi
Shinji Kawasaki
Nobuyuki Tanahashi
Yuichiro Tabuchi
Shinji Kawasaki
Application Number:
JP2005512027A
Publication Date:
November 02, 2011
Filing Date:
July 23, 2004
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
C04B38/00; B01D39/20; F01N3/02; G01N21/17; F01N3/022
Domestic Patent References:
| JPH1067573A | 1998-03-10 | |||
| JP2001261463A | 2001-09-26 | |||
| JP2005534474A | 2005-11-17 | |||
| JP2002356384A | 2002-12-13 | |||
| JP2002326881A | 2002-11-12 | |||
| JP2003117322A | 2003-04-22 |
Foreign References:
| WO2003082770A1 | 2003-10-09 |
Attorney, Agent or Firm:
Ippei Watanabe