Alumino Earth-Alkali Silicate Glasses with High Thermal Capacity for Light Bulbs and Use Thereof

An alumino earth-alkali silicate glass for lamp bulbs of tungsten halogen incandescent lamps has the following glass composition (% by weight) that reduces discoloration during operation of the lamp bulb: SiO2 55.0-62.5 Al2O3 14.5-18.5 B2O3 0.8-4.0 BaO 7.5-17.0 CaO 6.5-13.5 MgO 1.0-5.5 SrO 0-2.0 ZrO...

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Bibliographische Detailangaben
Hauptverfasser:	BERGMANN HANNELORE, BERGMANN HANS-JURGEN
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRIC INCANDESCENT LAMPS ELECTRICITY 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:	An alumino earth-alkali silicate glass for lamp bulbs of tungsten halogen incandescent lamps has the following glass composition (% by weight) that reduces discoloration during operation of the lamp bulb: SiO2 55.0-62.5 Al2O3 14.5-18.5 B2O3 0.8-4.0 BaO 7.5-17.0 CaO 6.5-13.5 MgO 1.0-5.5 SrO 0-2.0 ZrO2 0-1.5 TiO2 0-1.0 ZnO 0-0.5 CeO2 0-0.3 R2O