Glass-ceramic composition for hermetic seals

Details Glass-ceramic composition for hermetic seals Glass-ceramic composition for hermetic seals

1978-06-16

1979-01-23

Vertiz, O. R.

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 397, C03C 322, C03C 304, C03C 330

Patent

active

041359364

ABSTRACT:
The invention relates to a glass-ceramic composition having a high fracture strength adaptable for hermetically sealing to chromium bearing iron or nickel base alloys at temperatures of between about 950.degree. C to about 1100.degree. C to form a hermetically sealed insulator body, comprising from about 55 to about 65 weight percent SiO.sub.2, from about 0 to about 5 weight percent Al.sub.2 O.sub.3, from about 6 to about 11 weight % Li.sub.2 O, from about 25 to about 32 weight percent BaO, from about 0.5 to about 1.0 weight percent CoO and from about 1.5 to about 3.5 weight percent P.sub.2 O.sub.5.

REFERENCES:
patent: 3022179 (1962-02-01), Morrissey
patent: 3804608 (1974-04-01), Gaskell et al.
patent: 3837978 (1974-09-01), Basdiecker
patent: 3953220 (1976-04-01), Muller
patent: 3957496 (1976-05-01), Eagan

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