Method of sealing glass to aluminum, particularly for electrical feed-through connectors
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United States of America Patent
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Jul 23, 1996
Issued Date -
N/A
app pub date -
Jun 10, 1994
filing date -
Jan 20, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An insulating electrical feed-through connector extending through a wall of aluminium is obtained by using a sintered sleeve comprising phosphate glass in which a conductive pin is inserted. The sleeve is raised to a firing temperature in excess of the dilatometric softening temperature of the vitreous material in the presence of a first effective quantity of alumina between the sleeve and the wall and of a second effective quantity of nickel oxide between the sleeve and the pin, which makes it possible to achieve a simultaneous and direct hermetic sealing of the sleeve to the wall and of the pin to the sleeve.
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