SCRATCH RESISTANT GLASS AND METHOD OF MAKING

Glass-based articles comprise stress profiles providing improved scratch resistance. The glass-based articles comprise: a thickness t; a lithium aluminosilicate composition; and a molar ratio of sodium oxide (Na2O) to lithium oxide (Li2O) that is less than or equal to 0.63 at the center of the glass...

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Bibliographic Details
Main Authors WILKINSON, Taylor Marie, JIN, Yuhui, MCCASLIN, Joshua James, SCHNEIDER, Vitor Marino, SUN, Wei
Format Patent
LanguageEnglish
French
Published 04.03.2021
Subjects
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Summary:Glass-based articles comprise stress profiles providing improved scratch resistance. The glass-based articles comprise: a thickness t; a lithium aluminosilicate composition; and a molar ratio of sodium oxide (Na2O) to lithium oxide (Li2O) that is less than or equal to 0.63 at the center of the glass-based article. The articles have a molar ratio of sodium dioxide (Na2O) to lithium dioxide (Li2O) in a post-spike near region that is greater than or equal to 0.9 and/or less than 1.5. L'invention concerne des articles à base de verre comprenant des profils de contrainte qui apportent une résistance aux rayures améliorée. Les articles à base de verre ont : une épaisseur t ; une composition d'aluminosilicate de lithium ; et un rapport molaire d'oxyde de sodium (Na2O) à l'oxyde de lithium (Li2O) inférieur ou égal à 0,63 au centre de l'article à base de verre. Les articles ont un rapport molaire de dioxyde de sodium (Na2O) au dioxyde de lithium (Li2O) dans une région proche post-picot-fond supérieur ou égal à 0,9 et/ou inférieur à 1,5.
Bibliography:Application Number: WO2020US45864