Experimental oxygen potentials of U1-yPryO2± x and thermodynamic assessment of the U-Pr-O system

McMurray, Jake W.; Silva, Chinthaka M.

doi:10.1016/j.jnucmat.2015.11.059

Title: Experimental oxygen potentials of U_1-yPr_yO_{2± x} and thermodynamic assessment of the U-Pr-O system

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Abstract

Thermogravimetric analysis (TGA) was used to determine the oxygen potentials of fluorite urania-praseodymia (U_1-yPr_yO_{2± x}) solid solutions for y = 0.10 and 0.20 between 1000 and 1500 °C. A thermodynamic assessment of U-Pr-O system was performed using the CALPHAD (CALculation of PHAse Diagrams) method. Furthermore, the models well reproduce the TGA measurements and the computed phase relations are in good agreement with those proposed from an X-ray diffraction investigation.

Authors:

McMurray, Jake W. ^[1]; Silva, Chinthaka M. ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: 2015-12-09

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Nuclear Energy (NE)

OSTI Identifier:: 1237148

Alternate Identifier(s):: OSTI ID: 1396641

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Nuclear Materials

Additional Journal Information:: Journal Volume: 470; Journal ID: ISSN 0022-3115

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; UO_{2± x}; uranium; praseodymium; oxygen; compound energy formalism; CALPHAD; oxygen potential; phase equilibria

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                    McMurray, Jake W., and Silva, Chinthaka M.. Experimental oxygen potentials of U1-yPryO2± x and thermodynamic assessment of the U-Pr-O system.  United States: N. p., 2015. 
Web.  doi:10.1016/j.jnucmat.2015.11.059.

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                    McMurray, Jake W., & Silva, Chinthaka M.. Experimental oxygen potentials of U1-yPryO2± x and thermodynamic assessment of the U-Pr-O system.  United States.  https://doi.org/10.1016/j.jnucmat.2015.11.059

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                    McMurray, Jake W., and Silva, Chinthaka M.. Wed .  
"Experimental oxygen potentials of U1-yPryO2± x and thermodynamic assessment of the U-Pr-O system".  United States.  https://doi.org/10.1016/j.jnucmat.2015.11.059.  https://www.osti.gov/servlets/purl/1237148.

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@article{osti_1237148,

  title        = {Experimental oxygen potentials of U1-yPryO2± x and thermodynamic assessment of the U-Pr-O system},

  author       = {McMurray, Jake W. and Silva, Chinthaka M.},

  abstractNote = {Thermogravimetric analysis (TGA) was used to determine the oxygen potentials of fluorite urania-praseodymia (U1-yPryO2± x) solid solutions for y = 0.10 and 0.20 between 1000 and 1500 °C. A thermodynamic assessment of U-Pr-O system was performed using the CALPHAD (CALculation of PHAse Diagrams) method. Furthermore, the models well reproduce the TGA measurements and the computed phase relations are in good agreement with those proposed from an X-ray diffraction investigation.},

  doi          = {10.1016/j.jnucmat.2015.11.059},

  journal      = {Journal of Nuclear Materials},

  number       = ,

  volume       = 470,

  place        = {United States},

  year         = {2015},

  month        = {12}

}

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https://doi.org/10.1016/j.jnucmat.2015.11.059

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Title: Experimental oxygen potentials of U1-yPryO2± x and thermodynamic assessment of the U-Pr-O system

Abstract

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Title: Experimental oxygen potentials of U_1-yPr_yO_{2± x} and thermodynamic assessment of the U-Pr-O system