Swelling due to the partition of soluble fission products between the grey phase and uranium dioxide

被引：8

作者：

Cooper, M. W. D. ^{[1
]}

Middleburgh, Sc ^{[1
,2
]}

Grimes, R. W. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England

[2] Australian Nucl Sci & Technol Org, Inst Mat Engn, Menai, NSW 2234, Australia

来源：

PROGRESS IN NUCLEAR ENERGY | 2014年 / 72卷

基金：

英国工程与自然科学研究理事会;

关键词：

Nuclear fuel; Uranium dioxide; Grey phase; Computer simulation; Swelling; Fission products;

D O I：

10.1016/j.pnucene.2013.09.006

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The change in volume associated with the partition of soluble cations from uranium dioxide into the (Ba,Sr)ZrO3 grey phase has been investigated using atomic scale simulations. Here past work on the thermodynamic drive for the segregation of trivalent and tetravalent cations from uranium dioxide is built upon in the context of fuel swelling. Only small tetravalent cations segregate into the grey phase and this is predicted to result in an overall reduction in fuel volume. Individual trivalent cations that segregate, can cause either a contraction or an expansion of the overall fuel volume. Cr2O3 doped UO2 promotes co-partition forming mixed cation clusters in the grey phase and causing an overall reduction in fuel volume for all trivalent cations. This may have implications for fuel performance and may alter other fuel swelling mechanisms. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：33 / 37

页数：5

共 24 条

[21] Grain Boundaries in Uranium Dioxide: Scanning Electron Microscopy Experiments and Atomistic Simulations [J].

Nerikar, Pankaj V. ;

Rudman, Karin ;

Desai, Tapan G. ;

Byler, Darrin ;

Unal, Cetin ;

McClellan, Kenneth J. ;

Phillpot, Simon R. ;

Sinnott, Susan B. ;

Peralta, Pedro ;

Uberuaga, Blas P. ;

Stanek, Christopher R. .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2011, 94 (06) :1893-1900

[22] SOLUBILITY AND MIGRATION OF FISSION-PRODUCT BARIUM IN OXIDE FUEL [J].

SARI, C ;

SCHUMACHER, G ;

WALKER, CT .

JOURNAL OF NUCLEAR MATERIALS, 1979, 79 (01) :255-259

[23] REVISED EFFECTIVE IONIC-RADII AND SYSTEMATIC STUDIES OF INTERATOMIC DISTANCES IN HALIDES AND CHALCOGENIDES [J].

SHANNON, RD .

ACTA CRYSTALLOGRAPHICA SECTION A, 1976, 32 (SEP1) :751-767

[24] Defect cluster formation in M2O3-doped cubic ZrO2 [J].

Zacate, MO ;

Minervini, L ;

Bradfield, DJ ;

Grimes, RW ;

Sickafus, KE .

SOLID STATE IONICS, 2000, 128 (1-4) :243-254

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