CHEMICALLY TEMPERED GLASS OR GLASS-CERAMIC ARTICLE IN PANE FORM FOR USE AS COVER PANE, PROCESS FOR PRODUCTION THEREOF AND USE THEREOF

CHEMICALLY TEMPERED GLASS OR GLASS-CERAMIC ARTICLE IN PANE FORM FOR USE AS COVER PANE, PROCESS FOR PRODUCTION THEREOF AND USE THEREOF

A chemically tempered glass or glass-ceramic article in pane form for use as a cover pane includes a glass or glass-ceramic having a composition comprising the components SiO2, Al2O3, Li2O and Na2O, having a thickness d of 300 μm to 1000 μm, a compressive strength at a distance of 30 μm from a surfa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Leukel, Sebastian, Müller, Lars, Oberländer, Eric, Wieligmann, Karin, Wilde, Patrick
Format: Patent
Sprache:eng
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:A chemically tempered glass or glass-ceramic article in pane form for use as a cover pane includes a glass or glass-ceramic having a composition comprising the components SiO2, Al2O3, Li2O and Na2O, having a thickness d of 300 μm to 1000 μm, a compressive strength at a distance of 30 μm from a surface of a main face CS30 of at least 60 MPa, and a compressive strength at a distance of 50 μm from the surface of a main face CS50. The compressive strengths CS30 and CS50 of the same main face are in the following ratio V to one another:V=CS30CS50≤-0.0006*d+2,where d is the thickness of the article in μm.