Glass to metal sealing process
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United States of America Patent
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-
Dec 19, 1989
Issued Date -
N/A
app pub date -
Aug 8, 1988
filing date -
Oct 5, 1987
priority date (Note) -
Expired
status (Latency Note)
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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.
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