Corning Incorporated
ION EXCHANGEABLE BOROSILICATE GLASS COMPOSITIONS AND GLASS ARTICLES FORMED FROM THE SAME

Abstract:

A glass article may include SiO.sub.2, Al.sub.2O.sub.3, B.sub.2O.sub.3, at least one alkali oxide, and at least one alkaline earth oxide. The glass article may be capable of being strengthened by ion exchange. The glass article has a thickness t. The concentration(s) of the constituent components of the glass may be such that: 13.ltoreq.0.0308543*(188.5+((23.84*Al.sub.2O.sub.3)+(-16.97*B.sub.2O.sub.- 3)+(69.10*Na.sub.2O)+(-213.3*K.sub.2O))+((Na.sub.2O-7.274)*(-7.3628)+(Al.s- ub.2O.sub.3-2.863)*(K.sub.2O-0.520)*(321.5)+(B.sub.2O.sub.3-9.668)*(K.sub.- 2O-0.520)*(-39.74)))/t.