Composite body for gas discharge lamp

Stock material or miscellaneous articles – Composite – Of silicon containing

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313636, 428469, 428679, 428701, E05C 706

Patent

active

045017999

ABSTRACT:
Composite body, a gas discharge lamp having a sodium pressure from 300-600 torr in particular, having an envelope of densely sintered aluminium oxide or of other sodium vapor-resistant materials and a feed-through member of tantalum, niobium or other metals equivalent thereto, the bonding material consisting of a finely dispersed polycrystalline product having a composition in mole % between the following limits:

REFERENCES:
International published application WO79/00220; May 3, 1979; Hing et al.; "Heat Resistant Sealing Materials".

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