Abstract
Thermodynamic analysis of the effect of vanadium on the solubility of oxygen in Fe – Co – Cr melts has been carried out. Vanadium in Fe – Co – Cr melts at low contents increases oxygen concentration, which is determined by the chromium content. With a higher content of vanadium after changing the mechanism of the interaction process of chromium and vanadium with oxygen, when vanadium already determines the solubility of oxygen in the melt, the oxygen concentration initially decreases, and then, after passing through the minimum point, increases.
Highlights
Vanadium in Fe – Co – Cr melts at low contents increases oxygen concentration, which is determined by the chromium content
With a higher content of vanadium after changing the mechanism of the interaction process of chromium and vanadium with oxygen, when vanadium already determines the solubility of oxygen in the melt, the oxygen concentration initially decreases, and after passing through the minimum point, increases
При более высоком содержании ванадия, после смены механизма процесса взаимодействия хрома и ванадия с кислородом, когда уже ванадий определяет растворимость кислорода в расплаве, концентрация кислорода первоначально снижается, а затем, после прохождения точки минимума, растет
Summary
РАСТВОРИМОСТЬ КИСЛОРОДА В РАСПЛАВАХ СИСТЕМЫ Fe – Co – Cr, СОДЕРЖАЩИХ ВАНАДИЙ* В расплавах системы Fe – Co – Cr при содержании хрома выше 2,0 – 2,5 % (в зависимости от содержания кобальта) продуктом реакции взаимодействия хрома с кислородом, содержащимся в расплаве, является оксид Cr2O3 [6] Тогда уравнение (2) примет вид Концентрацию кислорода, равновесную с заданным содержанием хрома в расплаве, для реакции (1) можно рассчитать по уравнению
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