CPC C03C 3/093 (2013.01) [C03C 3/091 (2013.01); C03C 4/18 (2013.01); C03C 21/002 (2013.01); C03C 2204/00 (2013.01)] | 19 Claims |
1. A glass-based article comprising:
a lithium aluminosilicate composition;
a molar ratio of sodium oxide (Na2O) to lithium oxide (Li2O) that is less than or equal to 0.9 at the center of the glass-based article;
a thickness t; and
a stress profile comprising:
a spike region extending from the first surface to a knee at a spike depth of layer (DOLspike); and
a tail region extending from the knee to a center of the glass-based article, wherein within the tail region there is a post-spike near region;
wherein a molar ratio of sodium dioxide (Na2O) to lithium dioxide (Li2O) in the post-spike near region is greater than or equal to 0.9.
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