Glass and method for manufacturing glass

Glass contains, in mol percentage on an oxide basis, SiO2: 35% to 60%, B2O3: 0.8% to 8%, Al2O3: 6% to 21%, and MgO: 17% to 44%. Additionally, (MgO/Al2O3) ≥ 1 is satisfied, a measured Madelung constant m calculated by an expression (1A) is equal to or larger than 1.05, and a thermal expansion factor...

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Bibliographische Detailangaben
Hauptverfasser:	NAGANO, MIKIO, KADO, RIKIYA, TAMAI, KIYOSHI, INABA, SEIJI, KOBAYASHI, YUHA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL SEMICONDUCTOR DEVICES SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	Glass contains, in mol percentage on an oxide basis, SiO2: 35% to 60%, B2O3: 0.8% to 8%, Al2O3: 6% to 21%, and MgO: 17% to 44%. Additionally, (MgO/Al2O3) ≥ 1 is satisfied, a measured Madelung constant m calculated by an expression (1A) is equal to or larger than 1.05, and a thermal expansion factor as a ratio of a measured value [alpha] of a linear thermal expansion coefficient to a calculated value [alpha]cal of a linear thermal expansion coefficient calculated from composition is equal to or smaller than 0.7. Herein, E is a measured value of a Young's modulus of the glass, Vp is an average atomic packing factor of the glass, and Gt is average bond dissociation energy of the glass.