GLASS

Provided is a glass plate having a high Young's modulus and high devitrification viscosity. This glass contains, in mol% in terms of oxides, 30.0-50.0% SiO2, 10.0-30.0% B2O3, 10.0-30.0% Al2O3, 3.0-17.0% Y2O3, 3.5-17.0% Gd2O3, and 16.0-22.0% (Gd2O3 + Y2O3). The ratio (Gd2O3/Y2O3) is 0.15 to 7.0....

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Bibliographic Details
Main Authors INABA, Seiji, ONO, Kazutaka
Format Patent
LanguageEnglish
French
Japanese
Published 28.01.2021
Subjects
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Summary:Provided is a glass plate having a high Young's modulus and high devitrification viscosity. This glass contains, in mol% in terms of oxides, 30.0-50.0% SiO2, 10.0-30.0% B2O3, 10.0-30.0% Al2O3, 3.0-17.0% Y2O3, 3.5-17.0% Gd2O3, and 16.0-22.0% (Gd2O3 + Y2O3). The ratio (Gd2O3/Y2O3) is 0.15 to 7.0. L'invention concerne une plaque de verre ayant un module de Young élevé et une viscosité de dévitrification élevée. Ce verre contient, en % en moles en termes d'oxydes, 30,0-50,0% de SiO2, 10,0-30,0% de B2O3,10,0-30,0% d'Al2O3,3,0-17,0% de Y2O3, 3,5-17,0% de Gd2O3, et 16,0-22,0% de (Gd2O3 + Y2O3). Le rapport (Gd 2 O 3/Y 2 O 3 ) est de 0,15 à 7,0. 高ヤング率かつ高失透粘度のガラス板を提供すること。ガラスは、酸化物基準のモル%表示で、 SiO2:30.0~50.0%、 B2O3:10.0~30.0%、 Al2O3:10.0~30.0%、 Y2O3:3.0~17.0%、 Gd2O3:3.5~17.0%、(Gd2O3+Y2O3):16.0~22.0%、 を含有し、かつ、 (Gd2O3/Y2O3):0.15~7.0である。
Bibliography:Application Number: WO2019JP28892