Influence of defect clusters on diffusion processes in UO2+x
Thermodynamic and transport properties of hyperstoichiometric uranium dioxide,UO2+x, constitute a key issue in the application of this material for nuclear fuel since they are closely related to many chemical and physical processes, e.g., diffusion or creep. Starting from a point defect model for U...
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Universitätsbibliothek Leipzig
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ndltd-DRESDEN-oai-qucosa.de-bsz-15-qucosa-1914952015-12-12T03:25:17Z Influence of defect clusters on diffusion processes in UO2+x Riahi, Fatma Mekki, Djamel Eddine Diffusion Transport diffusion transport ddc:530 Thermodynamic and transport properties of hyperstoichiometric uranium dioxide,UO2+x, constitute a key issue in the application of this material for nuclear fuel since they are closely related to many chemical and physical processes, e.g., diffusion or creep. Starting from a point defect model for UO2+x developed by the authors in a preceding work[1] and quantitatively consistent with some literature experimental measurements of deviation from stoichiometry [2] and electrical conductivity[3],the oxygen and uranium self diffusion processes have been studied in order to appreciate the influence of defects involved in the model and particularly, the two Willis complexes i.e., 2(Oi"Oi'Vȯ)" and 2(Oi"O1'Vȯ)4'. Such a result leads the way to a better understanding of the mechanisms involved in diffusion processes and also helps to define more accurately the nature, as well as the type of the preferential interactions between diffusing impurities and the defects responsible for these transport properties. Universitätsbibliothek Leipzig Birine Nuclear Research Centre, Badji Mokhtar University, Faculty of Science / Department of physics, LESIMS Universität Leipzig, Fakultät für Physik und Geowissenschaften 2015-12-11 doc-type:article application/pdf http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-191495 urn:nbn:de:bsz:15-qucosa-191495 issn:1862-4138 http://www.qucosa.de/fileadmin/data/qucosa/documents/19149/diff_fund_11%282009%2999.pdf Diffusion fundamentals 11 (2009) 99, S. 1-17 eng |
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English |
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Diffusion Transport diffusion transport ddc:530 |
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Diffusion Transport diffusion transport ddc:530 Riahi, Fatma Mekki, Djamel Eddine Influence of defect clusters on diffusion processes in UO2+x |
description |
Thermodynamic and transport properties of hyperstoichiometric uranium dioxide,UO2+x, constitute a key issue in the application of this material for nuclear fuel since they are closely related to many chemical and physical processes, e.g., diffusion or creep.
Starting from a point defect model for UO2+x developed by the authors in a preceding work[1] and quantitatively consistent with some literature experimental measurements of deviation from stoichiometry [2] and electrical conductivity[3],the oxygen and uranium self diffusion processes have been studied in order to appreciate the influence of defects involved in the model and particularly, the two Willis complexes i.e., 2(Oi"Oi'Vȯ)" and 2(Oi"O1'Vȯ)4'. Such a result leads the way to a better understanding of the mechanisms involved in diffusion processes and also helps to define more accurately the nature, as well as the type of the preferential interactions between diffusing impurities and the defects responsible for these transport properties. |
author2 |
Birine Nuclear Research Centre, |
author_facet |
Birine Nuclear Research Centre, Riahi, Fatma Mekki, Djamel Eddine |
author |
Riahi, Fatma Mekki, Djamel Eddine |
author_sort |
Riahi, Fatma |
title |
Influence of defect clusters on diffusion processes in UO2+x |
title_short |
Influence of defect clusters on diffusion processes in UO2+x |
title_full |
Influence of defect clusters on diffusion processes in UO2+x |
title_fullStr |
Influence of defect clusters on diffusion processes in UO2+x |
title_full_unstemmed |
Influence of defect clusters on diffusion processes in UO2+x |
title_sort |
influence of defect clusters on diffusion processes in uo2+x |
publisher |
Universitätsbibliothek Leipzig |
publishDate |
2015 |
url |
http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-191495 http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-191495 http://www.qucosa.de/fileadmin/data/qucosa/documents/19149/diff_fund_11%282009%2999.pdf |
work_keys_str_mv |
AT riahifatma influenceofdefectclustersondiffusionprocessesinuo2x AT mekkidjameleddine influenceofdefectclustersondiffusionprocessesinuo2x |
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1718148179672694784 |