Translucent polycrystalline alumina and method of making same
US5747402A · kind A · utility
4Cited by
1References
5Claims
0Family size
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Key dates
| Filing date | Jan 31, 1997 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/825
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optically translucent polycrystalline alumina sintered body consists essentially of alumina, magnesia, terbia and, optionally, yttria. The magnesia is present in an amount of about 0.020 wgt. percent and the terbia is present in an amount of from about 0.005 to 0.060 wgt. percent. The yttria is present in an amount up to about 0.035 wgt. percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.