| abstract |
An aluminosilicate glass having a reduced affinity for halogens, comprising, in weight percent: from > 58 to about 64% SiO 2 , from about 14 to about 17.5% Al 2 O 3 ; from about 0 to about 1% B 2 O 3 , from 1 to about 7% MgO, from about 5.5 to about 14% CaO, from about 6 to about 17% BaO, and from 0 to about 8% SrO nand an aluminosilicate glass having a reduced affinity for halogens, comprising, in weight percent: about 60.7% SiO 2 , about 16.5% Al 2 O 3 ; about 0.3% B 2 O 3 , about 5.7% MgO, about 7.8% CaO, about 8% BaO, about 1 % ZrO 2 , from about 0 to about 0.3% CeO 2 and from about 0 to about 0.5% TiO 2 are disclosed. |