Glass to metal sealing process

Glass manufacturing – Processes – Operating under inert or reducing conditions

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Details

65 592, 65154, 65157, C03C 2702

Patent

active

048880370

ABSTRACT:
A single-step process is disclosed for hermetically sealing a glass to a metal having similar coefficients of thermal expansion without carrying out the conventional pretreatment steps of decarburization and oxidization by heating to at least the melting point of the glass in an atmosphere containing from about 0.5 to 2.5 volume percent of water vapor, 0 to about 5 volume percent of hydrogen gas and the balance an inert gas, such as nitrogen.

REFERENCES:
patent: 3631589 (1971-01-01), Garceau
patent: 3858378 (1975-01-01), Allen et al.
patent: 4025327 (1977-05-01), Harris
patent: 4445920 (1984-05-01), Smith

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