Sealing composition for sealing aluminum nitride and aluminum oxynitride ceramics
AssigneeOsram Sylvania Inc.
InventorsYi Zheng, Richard C. Marlor, George C. Wei
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Abstract
There is described a sealing composition for sealing aluminum nitride and aluminum oxynitride ceramics comprising: a mixture of SiO2, at least one other metal oxide, and a silicon additive comprising at least one of silicon metal or a silicide. The silicon additive acts to suppress the formation of nitrogen bubbles during the sealing of articles comprised of aluminum nitride or aluminum oxynitride ceramics, e.g., as in the case of a ceramic discharge vessel for a high intensity discharge lamp.
Claims8
A sealing composition consisting essentially of a mixture of silicon metal powder and an oxide mixture consisting essentially of 20 wt. % Al2O3, 15 wt. % SiO2 and 65 wt. % Dy2O3.
A sealing composition for sealing aluminum nitride and aluminum oxynitride ceramics comprising:
- a mixture of SiO2, Al2O3, Dy2O3, and a silicon additive comprising at least one of silicon metal or a silicide.
Dependencies are inferred from the claim text.