Fusion sealing materials

Details Fusion sealing materials Fusion sealing materials

1990-10-09

1992-02-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 17, 501 19, 501 32, C03C 814, C03C 818, C03C 824, C03C 1400

Patent

active

050894455

ABSTRACT:
There is disclosed a sealing material based on a lead sealing glass having a mill addition of a crystalline material having the crystalline structure of magnesium pyrophosphate. The effective coefficient of thermal expansion in a seal is substantially reduced by the mill addition, thereby permitting use with low expansion materials.

REFERENCES:
patent: 3258350 (1966-06-01), Martin
patent: 3907535 (1975-09-01), Muller
patent: 3951669 (1976-04-01), Malmendier et al.
patent: 4186023 (1980-01-01), Dumesnil
patent: 4238704 (1980-12-01), Bonk et al.

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