Hermetic feedthrough assembly for ceramic body

摘要

A wire extends through a ceramic body. The wire comprises a material selected from the group consisting of platinum, palladium, rhodium, iridium, osmium and alloys of platinum, palladium, rhodium, iridium, and osmium. The wire directly contacts the ceramic body to form a substantially hermetic seal between the ceramic body and the wire.

主权项

1. A method of forming a feedthrough assembly, comprising the steps of:
providing a green ceramic body; forming a through hole in the green ceramic body having a first diameter; inserting a corrosion-resistance solid wire through the hole, the wire comprising a material selected from the group consisting of platinum, palladium, rhodium, iridium, osmium and alloys of platinum, palladium, rhodium, iridium, and osmium and the wire having a second diameter; firing the green ceramic body to sinter the green ceramic body; and the first and second diameters being selected such that cracking of the sintered ceramic body adjacent the wire as a result of dimensional changes of the green ceramic body during firing is avoided and a substantially hermetic seal is formed between the sintered ceramic body and the wire, wherein the green ceramic body has a thickness of at least 0.050 inches thick.