Patent ID: 6770111
Filing Date: 2004-08-03
Classification: B01D,C03C,C04B,Y10S

Abstract:
A ceramic structure comprising a first phase Cs2O.Al2O3.4SiO2 (CAS4), a second phase Cs2O.Al2O3.2SiO2 (CAS2), and a third phase selected from the group consisting of SrO.Al2O3.2SiO2 (SAS2), SrO.SiO2 (SrSiO3) and combinations thereof, wherein the ceramic has a high thermal expansion anisotropy of between 1400-1450 ppm, as calculated from dimensional change &Dgr;L/Lo over a temperature range from room temperature to 1000Â° C., and an average coefficient of thermal expansion from room temperature to 1000Â° C. of âˆ’10Ã—10âˆ’7/Â° C. to +25Ã—10âˆ’7/Â° C.