High thermal expansion sealing glass for use in radio frequency

Details High thermal expansion sealing glass for use in radio frequency High thermal expansion sealing glass for use in radio frequency

1998-03-20

1999-10-12

Marcheschi, Michael

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 24, 501 45, 501 47, C03C 808, C03C 317, C03C 319

Patent

active

059654694

ABSTRACT:
The present invention provides a glass composition for hermetically sealing to high thermal expansion materials such as aluminum alloys, stainless steels, and copper alloys, which includes between about 10 and about 25 mole percent Na.sub.2 O, between about 10 and about 25 mole percent K.sub.2 O, between about 4 and about 15 mole percent Al.sub.2 O.sub.3, between about 35 and about 50 mole percent P.sub.2 O.sub.5, B.sub.2 O.sub.3 in a concentration not exceeding 10 mole percent, and MXO in a concentration not exceeding 12 mole percent, wherein MXO is a metal oxide selected from the group consisting of PbO, BaO, CaO and MgO or a mixture thereof. This composition is suitable to hermetically seal to components for use in RF-interconnection applications.

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patent: 5262364 (1993-11-01), Brow et al.
patent: 5367125 (1994-11-01), Viret

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