CERAMIC HONEYCOMB STRUCTURAL BODY AND METHOD OF MANUFACTURING THE STRUCTURAL BODY

Title:

CERAMIC HONEYCOMB STRUCTURAL BODY AND METHOD OF MANUFACTURING THE STRUCTURAL BODY

Document Type and Number:

WIPO Patent Application WO/2003/078121

Kind Code:

A1

Abstract:

A ceramic honeycomb structural body, comprising a cell composite body partitioned by a plurality of partition walls of porous structure and formed of a plurality of cells forming a fluid flow passage and an outer wall of porous structure surrounding and holding the outermost peripheral cells positioned on the outermost periphery of the cell composite body, characterized in that the portions of the partition walls positioned at at least one cell opening end part of the cell composite body form a reinforced partition wall part higher in strength than those (normally partition wall parts) other than the at least one cell opening end part and having a variation in porosity per unit volume of within ± 2%, whereby a uniform and excellent erosion resistance can be provided to the entire part of the reinforced partition wall part.

Inventors:

HIRAI SADAAKI (JP)
KAWAE TAKAYUKI (JP)
KATO YASUSHI (JP)

Application Number:

PCT/JP2003/002055

Publication Date:

September 25, 2003

Filing Date:

February 25, 2003

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)
HIRAI SADAAKI (JP)
KAWAE TAKAYUKI (JP)
KATO YASUSHI (JP)

International Classes:

B01D53/86; B01D53/88; B01J35/04; B28B11/04; C04B35/195; C04B35/632; C04B35/636; C04B38/00; F01N3/28; (IPC1-7): B28B11/04; B01J35/04; B01D53/86; F01N3/28

Foreign References:

US6242072B1	2001-06-05
JP2001220245A	2001-08-14
JP2002070545A	2002-03-08
JPH08224720A	1996-09-03
US20020022109A1	2002-02-21
JP2000237600A	2000-09-05
JPH04293550A	1992-10-19
JPS5599344A	1980-07-29
JP2000051710A	2000-02-22

Other References: