Title:
The light porous ceramic honeycomb structural body which delayed generating of microcrack
Document Type and Number:
Japanese Patent JP6049142
Kind Code:
B2
Abstract:
A porous ceramic honeycomb article includes a primary cordierite phase and an intercrystalline glass phase. In an as-fired condition, the porous ceramic honeycomb article exhibits microcrack parameter Nb 3 ¤ 0.06 and an as-fired E 500°C /E 25°C ratio ¤ 0.99. The article exhibits a coated microcrack parameter Nb 3 ¤ 0.14 and a coated E 500°C /E 25°C ratio ¤ 1.06 after the porous ceramic honeycomb article has been washcoated and calcined at a temperature of 550°C. After the article is exposed to a thermal treatment at a temperature ¥ 800°C following washcoating and calcining, at least a first portion of the porous ceramic honeycomb article has a first treated microcrack parameter Nb 3 ¥ 0.18, and a first treated mean coefficient of thermal expansion of not more than 12x10 -7 /°C over a temperature range of 25°C to 800°C. Methods of forming the porous ceramic honeycomb article are also disclosed.
Inventors:
Beer, Douglas Munro
Markel, Gregory Albert
Martin Joseph, Murta
Markel, Gregory Albert
Martin Joseph, Murta
Application Number:
JP2013542114A
Publication Date:
December 21, 2016
Filing Date:
November 30, 2011
Export Citation:
Assignee:
CORNING INCORPORATED
International Classes:
C04B38/00; B01D39/20; B29C48/11; C04B35/195
Domestic Patent References:
| JP2003154264A | ||||
| JP2010527874A | ||||
| JP2009542429A | ||||
| JP1003067A | ||||
| JP7010650A |
Foreign References:
| US20090142541 | ||||
| US20090297764 |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma
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