Method of forming yttria-gadolinia ceramic scintillator using hydroxide coprecipitation step
US5116559A · kind A · utility
15Cited by
8References
8Claims
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Key dates
| Filing date | Feb 26, 1991 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Feb 26, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9653
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A simplified method of forming polycrystalline translucent-to-transparent yttria-gadolinia composition scintillators comprises forming an aqueous suspension of hydroxide coprecipitates of the yttria-gadolinia composition, and converting the hydroxides to oxalates. The oxalates are neutralized by washing, dried, and granulated to form a finely dispersed oxalate powder. The oxalate powder is calcined, cold pressed to form a compact, and sintered in a reducing atmosphere or vacuum to form the polycrystalline translucent-to-transparent yttria-gadolinia composition scintillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.