SEALED CONDUCTIVE ACTIVE ALLOY FEEDTHROUGHS

摘要

Disclosed is a method of manufacturing an electrically conductive feedthrough in an article having a ceramic surface comprising the steps of inserting a feedthrough preform into and closely fitting an insertion hole in the article, said preform integrally comprising an outer surface comprising at least in part an active alloy capable of reacting with an inner surface of said insertion hole to wet said inner surface and form a braze and then heating and cooling said article and said feedthrough preform to form a braze sealing said feedthrough to said article. Also disclosed are feedthrough preforms comprising either an active alloy wire or a composite wire having a core and an outer layer of an active alloy. The invention further comprises fixing a non-melting electrical conductor to either feedthrough preform during the brazing step.