Glass or ceramic-to-metal composites or seals involving iron bas

Details Glass or ceramic-to-metal composites or seals involving iron bas Glass or ceramic-to-metal composites or seals involving iron bas

1975-05-27

1979-04-17

Silverman, Stanley S.

Metal treatment

Compositions

Heat treating

65 43, 65 59R, 427193, 427330, 427376D, 428450, 428433, C03C 2702

Patent

active

041499107

ABSTRACT:
Glass or ceramic-to-metal composites or seals wherein the glass or ceramic is bonded to an iron base alloy consisting essentially of from 1-5% silicon and from 1-10% chromium, remainder iron. The alloy develops a thermal oxide film which consists essentially of chromium oxide and .alpha.Fe.sub.2 O.sub.3 which may comprise from 10 to 100% of the oxide film thickness on the metal. The invention also includes a process of bonding the glass or ceramic to the metal which eliminates the need of a prolonged heat treatment performed in a special atmosphere.

REFERENCES:
patent: 3345218 (1967-10-01), Brookover et al.
patent: 3526550 (1970-09-01), Larson et al.
patent: 3574584 (1971-04-01), Girard et al.
patent: 3631589 (1971-01-01), Garceau
patent: 3676292 (1972-07-01), Pryor et al.
patent: 3826627 (1974-07-01), Pryor et al.
patent: 3826629 (1974-07-01), Pryor et al.
patent: 3977857 (1976-08-01), Mattox

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