Effect of oxygen impurity in sodium–potassium melt on the corrosion processes at the interface between vanadium alloy and eutectic melt
- Autores: Krasin V.1, Lyublinski I.1,2, Sojustova S.1, Semenov V.2
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Afiliações:
- Moscow Polytechnic University
- JSC Red Star
- Edição: Volume 8, Nº 2 (2017)
- Páginas: 260-267
- Seção: Materials of Power Engineering and RadiationResistant Materials
- URL: https://journals.rcsi.science/2075-1133/article/view/206316
- DOI: https://doi.org/10.1134/S2075113317020125
- ID: 206316
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Resumo
An analysis of available experimental data on thermodynamic activity coefficient of oxygen in binary liquid metal Na–K alloys is carried out. Thermodynamic correlations based on the coordination cluster model are used for theoretical evaluation of the effect of oxygen impurity on the solubility of vanadium in sodium–potassium eutectic alloy in the temperature range of 400–800°C. Isothermal capsule experiments qualitatively confirm the results of calculations of vanadium solubility in Na–K melt. On the basis of derived thermodynamic relationships the threshold concentration for the formation of ternary oxide NaVO2 on the surface of the solid vanadium in the Na0.32K0.68 melt has been calculated. The calculation results are compared with the corresponding values for the sodium coolant.
Sobre autores
V. Krasin
Moscow Polytechnic University
Autor responsável pela correspondência
Email: vkrasin@rambler.ru
Rússia, Moscow, 129626
I. Lyublinski
Moscow Polytechnic University; JSC Red Star
Email: vkrasin@rambler.ru
Rússia, Moscow, 129626; Moscow, 115230
S. Sojustova
Moscow Polytechnic University
Email: vkrasin@rambler.ru
Rússia, Moscow, 129626
V. Semenov
JSC Red Star
Email: vkrasin@rambler.ru
Rússia, Moscow, 115230