Ceramic discharge vessel having tungsten alloy feedthrough

Details Ceramic discharge vessel having tungsten alloy feedthrough Ceramic discharge vessel having tungsten alloy feedthrough

H - Electricity

01

J

H01J 5/00 (2006.01) H01J 5/04 (2006.01) H01J 5/32 (2006.01) H01J 61/30 (2006.01)

Patent

CA 2528716

A tungsten alloy feedthrough for ceramic discharge vessels is used to form a hermetic seal with the ceramic body of the discharge vessel. The tungsten alloy comprises tungsten alloyed with a metal selected from titanium, vanadium or a combination thereof. The alloy may be formulated to have a coefficient of thermal expansion that closely matches that of the ceramic to prevent cracking. Preferably, the tungsten alloy contains from about 10 to about 35 wt.% of a metal selected from Ti, V, or a combination thereof.

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