Cordierite glasses and glass-ceramics

Details Cordierite glasses and glass-ceramics Cordierite glasses and glass-ceramics

C - Chemistry, Metallurgy

03

C

31/113, 117/162,

C03C 12/00 (2006.01) C03C 10/00 (2006.01)

Patent

CA 1050259

Abstract of the. Disclosure Sinterable powdered glasses comprising MgO, Al2O3, SiO2 and at least one modifying oxide selected from the group consisting of BaO, PbO, SrO and CaO, which are thermally- crystallizable at sintering temperatures to yield highly crystalline, low expansion, thermally stable glass-ceramic products comprising crystals of a structuve corresponding to hexagonal cordierite as the crystal phase, are described. The use of the glasses to provide crystallized electrical barrier layers on glass-ceramic articles is also described.

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