FAST ION-EXCHANGEABLE BORON-FREE GLASSES WITH LOW SOFTENING POINT

摘要

Alkali aluminosilicate glasses that exhibit fast ion exchange performance and having low softening points that enable the glasses to be formed into non-planar, three- dimensional shapes. The glasses contain less than about 1 mo1% of boron oxide and, in some embodiments, are substantially free of B2O3. Furthermore, these glasses have excess amounts of alkali oxides relative to both A12O3 and P2O5, in order to improve melting behavior and ion exchange performance while still achieving sufficiently low softening points to allow for formability.