Please use this identifier to cite or link to this item:
http://www.repositorio.cdtn.br:8080/jspui/handle/123456789/524| Title: | Effect of grain-boundaries on uranium and oxygen diffusion in polycrystalline UO2 |
| Title of periodic: | Journal of Nuclear Materials Amsterdam |
| Authors: | Sabioni, Antonio Claret Soares Ferraz, Wilmar Barbosa Millot, F. |
| Affiliation: | Universidade Federal de Ouro Preto/UFOP, MG, Brasil Centro de Desenvolvimento da Tecnologia Nuclear/CDTN, Belo Horizonte, MG, Brasil Centre de Recherches sur les Matériaux à Haute Temperatures/CNRS, Orleans, France |
| Issue Date: | 2000 |
| Keywords: | Uranium dioxide;grain boundaries;diffusion |
| Abstract: | The influence of grain-boundaries on uranium and oxygen diffusion in polycrystalline UO2 has been investigated. Our results show that between 1498 and 1697 celsius degree, in H2 atmosphere, uranium diffusion in UO2 grain-boundaries is about five orders of magnitude greater than uranium volume diffusion, in the same experimental conditions. Between 605 and 750 celsius degree, in H2/N2/H2O atmosphere, the oxygen diffusion coefficients measured in polycrystalline and single crystalline UO2 are similar, and correspond to the volume diffusion. |
| Access: | L |
| Appears in Collections: | Artigo de periódico |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.