Thermodynamic assessment of the Pr-O system

McMurray, Jake W.

doi:10.1111/jace.14049

Title: Thermodynamic assessment of the Pr-O system

Journal Article · 24 December 2015 · Journal of the American Ceramic Society (Online)

DOI: https://doi.org/10.1111/jace.14049 · OSTI ID:1237141

McMurray, Jake W. ^[1]

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

The Calphad method was used to perform a thermodynamic assessment of the Pr–O system. Compound energy formalism representations were developed for the fluorite α‐PrO _{2– x} and bixbyite σ‐Pr ₃ O _{5 ± x} solid solutions while the two‐sublattice liquid model was used to describe the binary melt. The series of phases between Pr ₂ O ₃ and PrO ₂ were taken to be stoichiometric. Equilibrium oxygen pressure, phase equilibria, and enthalpy data were used to optimize the adjustable parameters of the models for a self‐consistent representation of the thermodynamic behavior of the Pr–O system from 298 K to melting.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE); USDOE

Grant/Contract Number:: AC05-00OR22725; DE‐AC05‐00OR22725

OSTI ID:: 1237141

Alternate ID(s):: OSTI ID: 1401642

Journal Information:: Journal of the American Ceramic Society (Online), Vol. 99, Issue 3; ISSN 1551-2916

Publisher:: American Ceramic SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 6 works

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References (33)

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Thermal decomposition of praseodymium nitrate hexahydrate Pr(NO3)3·6H2O Melnikov, P.; Arkhangelsky, I. V.; Nascimento, V. A. Journal of Thermal Analysis and Calorimetry, Vol. 133, Issue 2 https://doi.org/10.1007/s10973-018-7177-z	journal	March 2018

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