CHEMICALLY STRENGTHENED LITHIUM DISILICATE-PETALITE GLASS-CERAMICS

CHEMICALLY STRENGTHENED LITHIUM DISILICATE-PETALITE GLASS-CERAMICS

Ion-exchanged glass ceramic articles described herein have a stress that decreases with increasing distance according to a substantially linear function from a depth of about 0.07t to a depth of about 0.26t from the outer surface of the ion-exchanged glass ceramic article from a compressive stress t...

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Hauptverfasser: Noni, Lisa Marie, Roussev, Rostislav Vatchev, Smith, Charlene Marie, Fahey, Albert Joseph, Andrews, Ryan Claude, Ukrainczyk, Ljerka, Wilson, Shelby Kerin
Format: Patent
Sprache:eng
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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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creator Noni, Lisa Marie
Roussev, Rostislav Vatchev
Smith, Charlene Marie
Fahey, Albert Joseph
Andrews, Ryan Claude
Ukrainczyk, Ljerka
Wilson, Shelby Kerin
description Ion-exchanged glass ceramic articles described herein have a stress that decreases with increasing distance according to a substantially linear function from a depth of about 0.07t to a depth of about 0.26t from the outer surface of the ion-exchanged glass ceramic article from a compressive stress to a tensile stress. The stress transitions from the compressive stress to the tensile stress at a depth of from about 0.18t to about 0.25t from the outer surface of the ion-exchanged glass ceramic article. An absolute value of a maximum compressive stress at the outer surface of the ion-exchanged glass article is from 1.8 to 2.2 times an absolute value of a maximum central tension (CT) of the ion-exchanged glass article, and the glass ceramic article has a fracture toughness of 1 MPa√m or more as measured according to the double cantilever beam method.
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subjects 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
title CHEMICALLY STRENGTHENED LITHIUM DISILICATE-PETALITE GLASS-CERAMICS
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