Low CTE cordierite body

Details Low CTE cordierite body Low CTE cordierite body

2007-11-27

2007-11-27

Group, Karl E (Department: 1755)

Compositions: ceramic

Ceramic compositions

Refractory

C501S128000

Reexamination Certificate

active

11141784

ABSTRACT:
Disclosed is a sintered ceramic article that exhibits a primary crystalline phase of cordierite having an analytical oxide composition, expressed in weight percent on an oxide basis, of 49-53% SiO2, 33-38% Al2O3, 12-16% MgO and which exhibits a coefficient of thermal expansion equal to or more negative than −0.6×10−7/° C. over the temperature range of about 25° C. to about 800° C. Also disclosed is a method for producing a ceramic article comprising the aforementioned cordierite.

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