Determination of the oxygen coefficient for hyperstoichiometric uranium-plutonium mixed oxide by a solid- electrolyte-based coulometric technique

Autor:	L.V. Sudakov, C. Nebelung, A.S. Bevz, K. Teske, I.I. Kapshukov
Rok vydání:	1989
Předmět:	Nuclear and High Energy Physics Hydrogen Electrolytic cell Inorganic chemistry Analytical chemistry chemistry.chemical_element Electrolyte Oxygen Nuclear Energy and Engineering chemistry Fast ion conductor Mixed oxide General Materials Science Energy source Stoichiometry
Zdroj:	Journal of Nuclear Materials. 168:97-100
ISSN:	0022-3115
Popis:	The cubic phase of the uranium-plutonium mixed oxide U 1− z Pu z O 2+ x has a wide range of homogeneity relative to x . The oxygen potential of the phase is a single value function of stoichiometry and temperature and is of importance in the use as nuclear fuel. For determination of the oxygen coefficients of hyperstoichiometric uranium-plutonium mixed oxide the solid-electrolyte-based coulometric technique has been used. The sample to be analysed is reduced in a Ar-H 2 -H 2 O gaseous mixture. The changes in hydrogen concentration according to the reaction U 1− z Pu z O 2 + x + xH 2 → U 1− z Pu z O 2 + xH 2 O are continuously measured by coulometric titration with a solid electrolyte cell. The standard deviation of the measurement was found to be Δx = ± 0.0004. During the storage of the powdered samples a slow oxidation occurs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::56c441b5bdf9b6867f63bac7c12ad7c4 https://doi.org/10.1016/0022-3115(89)90569-2 Zobrazit plný text záznamu