Sealing materials for ceramic envelopes

Details Sealing materials for ceramic envelopes Sealing materials for ceramic envelopes

1977-05-06

1978-02-28

Demeo, Palmer C.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

313221, 313227, 106 732, 428433, H01J 6136, C04B 3550

Patent

active

040769917

ABSTRACT:
New sealant compositions for sealing end closures or inleads in ceramic envelopes are based on the system Dy.sub.2 O.sub.3 -Al.sub.2 O.sub.3 -SiO.sub.2. These compositions will withstand metal halides used as arc materials up to temperatures exceeding 1200.degree. C, and make possible more efficient lamps of improved color rendition.

REFERENCES:
patent: 3281309 (1966-10-01), Ross
patent: 3441421 (1969-04-01), Sarver et al.
patent: 3588573 (1971-06-01), Chen et al.
patent: 3848151 (1974-11-01), McVey

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