Ion-exchanged glass of high surface compression and shallow depth of layer with high resistance to radial crack formation from vickers indentation

Ion-exchanged glass of high surface compression and shallow depth of layer with high resistance to radial crack formation from vickers indentation

Disclosed are alkali aluminosilicate glasses having unexpected resistance to indentation cracking. The glasses obtain this high resistance as a result of a high level of surface compression accompanied by a shallow depth of layer. The advantaged glasses show greater resistance to radial crack format...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Saha Chandan Kumar, Wilantewicz Trevor E, Pesansky Jonathan David
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:Disclosed are alkali aluminosilicate glasses having unexpected resistance to indentation cracking. The glasses obtain this high resistance as a result of a high level of surface compression accompanied by a shallow depth of layer. The advantaged glasses show greater resistance to radial crack formation from Vickers indentation than glasses with the same compressive stress, but higher depths of layer.