LOW CTE CORDIERITE BODY AND METHODS OF MANUFACTURING SAME

摘要

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 -0.6x10^-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.