Li2o-al2o3-sio2-based crystallized glass
AssigneeNippon Electric Glass Co., Ltd.
InventorsYuki YOKOTA, Takahiro MATANO, Takahiro TAKAHASHI, Shin TOJO
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Abstract
Provided is a Li2O—Al2O3—SiO2-based crystallized glass in which a yellowish tint due to TiO2, Fe2O3 or so on is reduced. The Li2O—Al2O3—SiO2-based crystallized glass contains, in terms of % by mass, 40 to 90% SiO2, 5 to 30% Al2O3, 1 to 10% Li2O, 0 to 20% SnO2, 1 to 20% ZrO2, 0 to 10% MgO, 0 to 10% P2O5, and 0 to below 2% TiO2.
Claims24
A Li2O—Al2O3—SiO2-based crystallized glass containing, in terms of % by mass, 40 to 90% SiO2, 5 to 30% Al2O3, 1 to 10% Li2O, 0 to 20% SnO2, 1 to 20% ZrO2, 0 to 10% MgO, 0 to 10% P2O5, and 0 to below 2% TiO2.
A Li2O—Al2O3—SiO2-based crystallized glass having a transmittance of 10% or more at a thickness of 3 mm and a wavelength of 300 nm and a coefficient of thermal expansion of 30×10−7/° C. or less at 30 to 380° C.
A Li2O—Al2O3—SiO2-based crystallized glass having a rate of transmittance change of 50% or less at a thickness of 3 mm and a wavelength of 300 nm between before and after crystallization.
Dependencies are inferred from the claim text.