Thermodynamic assessment of the oxygen rich U–Ce–O system

Autor:	Kiichi Suzuki, B.W. Slone, J.T. White, Masato Kato, Kenneth J. McClellan, Takashi Murakami, Stewart L Voit, Shun Hirooka, Andrew T. Nelson, Jacob W. McMurray, Theodore M. Besmann
Rok vydání:	2015
Předmět:	Nuclear and High Energy Physics Thermogravimetric analysis Chemistry Ionic bonding chemistry.chemical_element Thermodynamics Fluorite Oxygen Cerium Materials Science(all) Nuclear Energy and Engineering General Materials Science Ternary operation CALPHAD MOX fuel Nuclear chemistry
Zdroj:	Journal of Nuclear Materials. 467:588-600
ISSN:	0022-3115
DOI:	10.1016/j.jnucmat.2015.10.008
Popis:	A thermodynamic assessment of the U–Ce–O system was performed by combining the existing Calphad assessments of the U–O and Ce–O binaries. A compound energy formalism representation for the fluorite U1−yCeyO2±x and a partially ionic two-sublattice liquid model for U–Ce–O melt were developed to describe the ternary solutions. Oxygen potentials for U1−yCeyO2±x for 0.05, 0.20, 0.30, and 0.50 Ce metal fractions were measured from thermogravimetric analysis and used, along with other thermodynamic data reported in the literature, to optimize the adjustable parameters of the models for U1−yCeyO2±x and the U–Ce–O ternary liquid. In addition, the thermochemical behavior of U1−yCeyO2±x and U1−yPuyO2±x was compared in order to assess the suitability of using Ce as a surrogate for Pu in MOX fuel.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ced2eb15787872b2ac61008b2b25ca6b https://doi.org/10.1016/j.jnucmat.2015.10.008 Zobrazit plný text záznamu Full Text from ScienceDirect