Title:
コージェライト構造体
Document Type and Number:
Japanese Patent JP4771568
Kind Code:
B2
Abstract:
A plasticizable raw material mixture for use in preparing a substrate having cordierite as its primary phase with the mixture comprised of a chemical composition, percent by weight, of 11 to 17% MgO, 33 to 41% Al2O3 and, 46 to 53% SiO2. The raw material mixture specifically comprises the following: (1) one source of Al2O3 and SiO2 comprising a clay mixture having less than about 22 %, by weight based on the total raw materials in the plasticizable mixture, of calcined clay; (2) an alumina yielding precursor comprising alumina having an average particle diameter of about 1 mu m or less; and, (3) at least one source of magnesia having an average particle diameter of between about 3 to 15 microns. This invention additionally relates to a method of producing a green body of cordierite-forming materials comprising preparing a plasticizable raw material mixture of the aforementioned composition, adding an organic binder system to the mixture and mixing the mixture to form an extrudable mixture, and extruding the mixture to form a substrate of the desired configuration. The green body is dried and fired to yield a ceramic substrate having cordierite as its primary phase.
Inventors:
Douglas Munro Beer
Devi Sharasani
Devi Sharasani
Application Number:
JP22250099A
Publication Date:
September 14, 2011
Filing Date:
August 05, 1999
Export Citation:
Assignee:
CORNING INCORPORATED
International Classes:
C04B35/00; C04B35/195; B01J21/14; B01J35/04; B01J37/00; C04B38/00; F01N3/28; B01J32/00
Domestic Patent References:
| JP7188504A | ||||
| JP6263528A | ||||
| JP7017761A |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma