SCRATCH RESISTANT GLASS AND METHOD OF MAKING

Abstract: methods of manufacturing a glass-based article includes exposing a glass-based substrate having a lithium aluminosilicate composition to an ion exchange treatment to form the glass-based article. the ion exchange treatment including a molten salt bath having a concentration of a sodium salt in a range from 8 mol % to 100 mol %. the glass-based article includes sodium having a non-zero varying concentration extending from a surface of the glass-based article to a depth of the glass-based article. the glass-based article has compressive stress layer extending from the surface to a spike depth of layer from 4 micrometers to 8 micrometers. the glass-based article includes a molar ratio of potassium oxide (ko) to sodium oxide (nao) averaged over a distance from the surface to a depth of 0.4 micrometers that is greater than or equal to 0 and less than or equal to 1.8.

Inventor(s): Jaymin Amin, Xiaoju Guo, Pascale Oram, Rostislav Vatchev Roussev, Ljerka Ukrainczyk, Taylor Marie Wilkinson

CPC Classification: C03C21/002 (Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface)

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