Preparation of hypostoichiometric UO2-x at low temperatures and study of some properties
| Autor: | O. V. Skiba, A. S. Bevz, I.I. Kapshukov, L.V. Sudakov, N.V. Lyalyushkin |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Quenching
Zirconium Materials science Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Analytical chemistry Oxide chemistry.chemical_element Thermal treatment Crystal structure Atmospheric temperature range Pollution Analytical Chemistry Coulometry chemistry.chemical_compound Lattice constant Nuclear Energy and Engineering chemistry Radiology Nuclear Medicine and imaging Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry Articles. 143:213-220 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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