Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1987-11-25
1989-05-23
Nelson, Peter A.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
428545, 428561, 427125, 4273763, 4273767, 204 15, H05K 310
Patent
active
048330396
ABSTRACT:
A process for producing an hermetic feedthrough in a ceramic substrate by providing a sheet of liquid phase sinterable ceramic composition having a feedthrough hole, filling the feedthrough hole with refractory metal metallization material, firing the resulting structure to produce a sintered substrate and adherent metallization wherein the metallization is comprised of continuous phases of refractory metal and glass, contacting the refractory metal with electrically conductive intrusion metal and heating the resulting structure to a temperature at which the glassy phase is fluid, the refractory metal is solid, and the intrusion metal is liquid whereby the liquid metal preferentially wets the refractory metal, migrates into the metallization displacing glass and, upon subsequent solidification, partially or wholly occupies the volume space originally containing the continuous glass phase.
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Charles Richard J.
Mitoff Stephan P.
Pasco Wayne D.
Binkowski Jane M.
Davis Jr. James C.
General Electric Company
Magee Jr. James
Nelson Peter A.
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