Alkali-free glass plate
The present invention provides an alkali-free glass sheet, including as a glass composition, in terms of mol %, 60% to 74% of SiO2, 6% to 20% of Al2O3, 0% to 9% of B2O3, 1% to 13% of MgO, 1% to 13% of CaO, 0% to 7% of SrO, 0% to 8% of BaO, and 0% to less than 1.0% of Y2O3+La2O3, being substantially...
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Zusammenfassung: | The present invention provides an alkali-free glass sheet, including as a glass composition, in terms of mol %, 60% to 74% of SiO2, 6% to 20% of Al2O3, 0% to 9% of B2O3, 1% to 13% of MgO, 1% to 13% of CaO, 0% to 7% of SrO, 0% to 8% of BaO, and 0% to less than 1.0% of Y2O3+La2O3, being substantially free of an alkali metal oxide, and having a strain point of 650° C. or more. |
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