Sealing compound and ceramic discharge vessel comprising such sealing compound

Disclosed is a lamp comprising a ceramic discharge vessel (3) with end parts (34) and with electrodes (4) which are connected to a respective external contact via a respective feedthrough (20). Each feedthrough is sealed with a sealing part (40) thereof by a sealing compound (10) in the end part. Th...

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Bibliographische Detailangaben
Hauptverfasser:	DENISSEN CORNELIS JOHANNES MARIA, KESSELS MARTINUS JOSEPH MARIA, MULDERIJ TON REINIER
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRICITY MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	Disclosed is a lamp comprising a ceramic discharge vessel (3) with end parts (34) and with electrodes (4) which are connected to a respective external contact via a respective feedthrough (20). Each feedthrough is sealed with a sealing part (40) thereof by a sealing compound (10) in the end part. The discharge vessel gastightly encloses a discharge space into which said two electrodes extend from the end part and which contains an ionizable filling. The sealing compound comprises at least one first component chosen from the group consisting of ruthenium (Ru), iridium (Ir), osmium (Os) and rhenium (Re), and comprises at least one second component chosen from the group consisting of silicium (Si), boron (B), phosphor (P). Thus, a halide resistant lamp vessel is obtained exhibiting excellent lifetime characteristics and long lifetimes.