Hermetic feedthrough assembly for ceramic body
First Claim
Patent Images
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.
3 Assignments
0 Petitions
Accused Products
Abstract
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.
-
Citations
15 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of forming a feedthrough assembly in a ceramic body, comprising the steps of:
-
providing a green ceramic body that surrounds corrosion-resistance solid wire extending through the green ceramic body, 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 firing the green ceramic body to sinter the green ceramic body; whereby 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. - View Dependent Claims (11, 12, 13, 14, 15)
-
Specification