TWO-STEP METHOD FOR STRENGTHENING GLASS

Alkali aluminoborosilicate glass article, comprising 50-70 mol% SiO; 5-15 mol% AlO; 5-20 mol% BO; 2-15 mol% LiO; 0-20 mol% NaO; and 0-10 mol% KO, wherein the glass article has a surface having a compressive layer extending from the surface to a depth of layer and is enriched in potassium to a second...

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Bibliographische Detailangaben
Hauptverfasser:	LAMBERSON, Lisa A, MORENA, Robert M, GOMEZ, Sinue
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	Alkali aluminoborosilicate glass article, comprising 50-70 mol% SiO; 5-15 mol% AlO; 5-20 mol% BO; 2-15 mol% LiO; 0-20 mol% NaO; and 0-10 mol% KO, wherein the glass article has a surface having a compressive layer extending from the surface to a depth of layer and is enriched in potassium to a second depth that is less than the depth of layer, and wherein the surface of the glass article has a crack initiation threshold of at least 3000 gf upon indentation with a Vickers indenter.