Fabrication method of sintered duplex nuclear fuel pellet
US7485246B2 · kind B2 · utility
2Cited by
7References
6Claims
0Family size
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Key dates
| Filing date | Feb 2, 2005 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Feb 1, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for fabricating a sintered duplex nuclear fuel pellet includes the steps of: preparing a first powder composed of a material selected from the group consisting of UO2 and UO2—Er2O3, and a second powder composed of UO2—Gd2O3 and a sintering additive; producing a duplex compact consisting of an annular outer portion composed of the first powder and a cylindrical inner portion composed of the second powder; and sintering the duplex compact under a reducing gas atmosphere, wherein the sintering additive contains manganese of 0.001% to 2% by weight based on the total weight of the cylindrical inner portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.