Modelling oxygen self-diffusion in UO2 under pressure
Abstract
Access to values for oxygen self-diffusion over a range of temperatures and pressures in UO2 is important to nuclear fuel applications. Here, elastic and expansivity data are used in the framework of a thermodynamic model, the cBΩ model, to derive the oxygen self-diffusion coefficient in UO2 over a range of pressures (0–10 GPa) and temperatures (300–1900 K). Furthermore, the significant reduction in oxygen self-diffusion as a function of increasing hydrostatic pressure, and the associated increase in activation energy, is identified.
- Authors:
-
- Imperial College London, London (United Kingdom); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Imperial College London, London (United Kingdom)
- Coventry Univ., Coventry (United Kingdom)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1296666
- Report Number(s):
- LA-UR-15-26859
Journal ID: ISSN 0167-2738
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Solid State Ionics
- Additional Journal Information:
- Journal Volume: 282; Journal ID: ISSN 0167-2738
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; UO2; self-diffusion; pressure
Citation Formats
Cooper, Michael William D., Grimes, R. W., Fitzpatrick, M. E., and Chroneos, A. Modelling oxygen self-diffusion in UO2 under pressure. United States: N. p., 2015.
Web. doi:10.1016/j.ssi.2015.09.006.
Cooper, Michael William D., Grimes, R. W., Fitzpatrick, M. E., & Chroneos, A. Modelling oxygen self-diffusion in UO2 under pressure. United States. https://doi.org/10.1016/j.ssi.2015.09.006
Cooper, Michael William D., Grimes, R. W., Fitzpatrick, M. E., and Chroneos, A. Thu .
"Modelling oxygen self-diffusion in UO2 under pressure". United States. https://doi.org/10.1016/j.ssi.2015.09.006. https://www.osti.gov/servlets/purl/1296666.
@article{osti_1296666,
title = {Modelling oxygen self-diffusion in UO2 under pressure},
author = {Cooper, Michael William D. and Grimes, R. W. and Fitzpatrick, M. E. and Chroneos, A.},
abstractNote = {Access to values for oxygen self-diffusion over a range of temperatures and pressures in UO2 is important to nuclear fuel applications. Here, elastic and expansivity data are used in the framework of a thermodynamic model, the cBΩ model, to derive the oxygen self-diffusion coefficient in UO2 over a range of pressures (0–10 GPa) and temperatures (300–1900 K). Furthermore, the significant reduction in oxygen self-diffusion as a function of increasing hydrostatic pressure, and the associated increase in activation energy, is identified.},
doi = {10.1016/j.ssi.2015.09.006},
journal = {Solid State Ionics},
number = ,
volume = 282,
place = {United States},
year = {Thu Oct 22 00:00:00 EDT 2015},
month = {Thu Oct 22 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
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