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Preparation of hypostoichiometric UO2-x at low temperatures and study of some properties

  • Solid State Physics and Chemistry
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Abstract

Preparation of UO2-x samples by means of thermal treatment of zirconium or quartz ampoules containing powdered UO2 and thorium metal having properties of oxygen getter is described. UO2-x samples were identified by X-ray technique. Oxide prepared was a black powder with crystal lattice parameter exceeding that of stoichiometric UO2.000. It is shown that under such conditions UO2-x may be prepared within the temperature range of 500–1200°C and fixed by quenching at room temperature. Oxygen coefficient values of oxides were estimated by method of solid electrolyte coulometry (SEC). Lattice parameter versus O/U ratio was determined. Maximum value of UO2-x lattice parameter was 0.54760 nm which agreed with UO1.98.

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Authors and Affiliations

  1. V. I. Lenin Research Institute of Atomic Reactors, Dimitrovgrad, (USSR)

    I. I. Kapshukov, N. V. Lyalyushkin, L. V. Sudakov, A. S. Bevz & O. V. Skiba

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  1. I. I. Kapshukov
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  2. N. V. Lyalyushkin
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  3. L. V. Sudakov
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  4. A. S. Bevz
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  5. O. V. Skiba
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Kapshukov, I.I., Lyalyushkin, N.V., Sudakov, L.V. et al. Preparation of hypostoichiometric UO2-x at low temperatures and study of some properties. Journal of Radioanalytical and Nuclear Chemistry, Articles 143, 213–220 (1990). https://doi.org/10.1007/BF02117563

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  • DOI: https://doi.org/10.1007/BF02117563

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