Ceramic discharge vessel

Details Ceramic discharge vessel Ceramic discharge vessel

H - Electricity

01

J

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

Patent

CA 2527607

The present invention is a ceramic discharge vessel for use in high-intensity-discharge (HID) lamps. The discharge vessel has a ceramic body and at least one seal region comprised of an aluminum oxynitride material. The seal region further has a surface layer for contacting a frit material wherein the surface layer is less reactive than the aluminum oxynitride material with respect to the molten frit during sealing. Preferably, the surface layer has a lower nitrogen content than the aluminum oxynitride material. The less reactive surface acts to minimize the formation of bubbles in the sealing frit during the sealing operation.

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