Corning Incorporated
High strength glass-ceramics having petalite and lithium silicate structures

Abstract:

In embodiments, a precursor glass comprising from about 55 wt. % to about 80 wt. % SiO.sub.2; from about 5 wt. % to about 20 wt. % Al.sub.2O.sub.3; from about 5 wt. % to about 20 wt. % Li.sub.2O; from about 2 wt. % to about 4 wt. % P.sub.2O.sub.5; and from about 0.2 wt. % to about 15 wt. % ZrO.sub.2.