ALKALI-FREE GLASS PLATE

The present invention provides an alkali-free glass sheet, including as a glass composition, in terms of mol %, 55% to 80% of SiO2, 10% to 25% of Al2O3, 0% to 4% of B2O3, 0% to 30% of MgO, 0% to 25% of CaO, 0% to 15% of SrO, 0% to 15% of BaO, 0% to 5% of ZnO, and 0% to less than 1.0% of Y2O3+La2O3,...

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Bibliographische Detailangaben
Hauptverfasser:	MUSHIAKE, Atsushi, SAITO, Atsuki
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:	The present invention provides an alkali-free glass sheet, including as a glass composition, in terms of mol %, 55% to 80% of SiO2, 10% to 25% of Al2O3, 0% to 4% of B2O3, 0% to 30% of MgO, 0% to 25% of CaO, 0% to 15% of SrO, 0% to 15% of BaO, 0% to 5% of ZnO, and 0% to less than 1.0% of Y2O3+La2O3, being substantially free of an alkali metal oxide, and having a strain point of 750° C. or more.