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Hermetic feedthrough assembly for ceramic body

  • US 8,763,245 B1
  • Filed: 06/30/2006
  • Issued: 07/01/2014
  • Est. Priority Date: 06/30/2006
  • Status: Active Grant
First Claim
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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.

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