Title:
コージエライトの多孔質セラミックハニカム物品
Document Type and Number:
Japanese Patent JP2013534889
Kind Code:
A
Abstract:
Porous ceramic honeycomb articles for use as particulate filters and processes for making the same are described herein. The porous ceramic honeycomb articles include a fired cordierite body. The fired cordierite body has a microcrack parameter (Nb3) of about 0.05 to about 0.25 prior to exposure to a microcracking condition. After exposure to the microcracking condition, the fired cordierite body has a microcrack parameter (Nb3) at least 20% greater than the microcrack parameter prior to exposure to the microcracking condition. The fired cordierite body has a coefficient of thermal expansion (CTE) of about 7.0×10−7/° C. to about 15.0×10−7/° C. over from about 25° C. to about 800° C. prior to exposure to the microcracking condition and a coefficient of thermal expansion of about 1.0×10−7/° C. to about 10.0×10−7/° C. over from about 25° C. to about 800° C. after exposure to the microcracking condition. The microcrack parameter may include a thermal cycle or a chemical treatment.
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Inventors:
Miao, Wei Guo
One, Jeng Guo
One, Jeng Guo
Application Number:
JP2013513233A
Publication Date:
September 09, 2013
Filing Date:
May 26, 2011
Export Citation:
Assignee:
CORNING INCORPORATED
International Classes:
C04B38/00; B01D53/86; B01J35/04; C04B35/195; F01N3/022; F01N3/28; B01D39/20
Domestic Patent References:
| JP2010502545A | 2010-01-28 |
Foreign References:
| WO2009110974A1 | 2009-09-11 |
Other References:
JPN6012015728; ＨＡＳＳＥＬＭＡＮ Ｄ Ｐ Ｈ: 'Ａｎａｌｙｓｉｓ ｏｆ Ｔｈｅｒｍａｌ Ｓｔｒｅｓｓ Ｒｅｓｉｓｔａｎｃｅ ｏｆ Ｍｉｃｒｏｃｒａｃｋｅｄ Ｂｒｉｔｔｌｅ Ｃｅｒａｍｉｃｓ' Ａｍ Ｃｅｒａｍ Ｓｏｃ Ｂｕｌｌ Ｖｏｌ．５８ Ｎｏ．９, 19791102, ｐ．８５６-８６０
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma