Alumina, calcia, yttria sealing composition

Details Alumina, calcia, yttria sealing composition Alumina, calcia, yttria sealing composition

1992-08-03

1994-06-14

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

313624, 501 41, H01J 1718, C03C 300

Patent

active

053213351

ABSTRACT:
The invention relates to a sealing composition suitable for bonding yttria or alumina ceramic members, or bonding refractory metals to the ceramics. The sealing composition has, in mole percent, about 0.5 to 40 percent yttria, about 45 to 65 percent alumina, up to 10 mole percent strontia, and the balance substantially calcia.

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patent: 3588577 (1971-06-01), McVey et al.
patent: 3598435 (1971-08-01), Jorgensen
patent: 4056752 (1977-11-01), Bubar
patent: 4103200 (1978-07-01), Bhalla
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patent: 4208605 (1980-06-01), McVey et al.
patent: 4291250 (1981-09-01), Bhalla
patent: 4326038 (1982-04-01), Oda et al.
patent: 4435669 (1984-03-01), Plagge et al.

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