| Autor: |
Kolobov, E. A., Kirshin, M. Yu., Pokhitonov, Yu. A. |
| Předmět: |
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| Zdroj: |
Radiochemistry; Oct2021, Vol. 63 Issue 5, p572-582, 11p |
| Abstrakt: |
The dissolution of uranium alloys with Mo, Zr, Si, and other alloying elements in nitric acid has been studied. Data on the dissolution rate vs. the concentration of nitric acid and temperature are reported. The temperature coefficients of the reaction and the values of the effective activation energy of the interaction of alloys with an acid are calculated. For most of the samples, the obtained values are comparable with the dissolution rate of undoped uranium. In the case of introducing alloying elements Zr and Nb into metallic uranium, a decrease in the rate of the process occurred, and the rate of dissolution of uranium silicide was 5–10 times higher than that of undoped uranium. Upon dissolution, insoluble precipitates formed, their yield reached 8–10%. A relationship was established between the composition of inclusions present in the alloy and the composition of the precipitate after dissolution. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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