Ceramic discharge vessel having a sealing composition
US7741780B2 · kind B2 · utility
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16References
18Claims
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Assignee
Inventor
Key dates
| Filing date | Feb 26, 2007 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Jun 3, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2237/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sealing composition for ceramic discharge vessels is described. The sealing composition contains about 20 to about 40 mole percent MgO, about 20 to about 45 mole percent Y2O3, and about 20 to about 60 mole percent Al2O3 and has a melting point of less than about 1800° C., and preferably from about 1700° C. to about 1800° C. The sealing composition may be used for making ceramic-to-ceramic or ceramic-to-metal seals in ceramic discharge vessels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.