Abstract

A thermodynamic analysis of the oxygen solutions in carbon-containing Fe, Fe–70% Ni, and Ni melts is performed. The equilibrium constants of the reaction of carbon with oxygen, the activity coefficients at infinite dilution, and the interaction parameters for the melts are determined at 1873 K. The dependences of the oxygen solubility in the melts on the carbon content are calculated. The oxygen concentrations in the Fe and Ni melts with the same carbon content differ by almost two orders of magnitude. The CO and CO₂ gaseous oxides are the products of carbon deoxidation. A decrease in the gas pressure substantially increases the deoxidation ability of carbon. The oxygen solubility in the Fe–70% Ni melt with different carbon contents is studied experimentally. The experimental results adequately agree with the calculated data.

中文翻译：

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碳对 Fe–70% Ni 熔体中氧溶解度的影响

摘要

对含碳 Fe、Fe–70% Ni 和 Ni 熔体中的氧溶液进行热力学分析。碳与氧反应的平衡常数、无限稀释时的活度系数和熔体的相互作用参数在 1873 K 时确定。计算熔体中氧溶解度对碳含量的依赖性。碳含量相同的 Fe 和 Ni 熔体中的氧浓度相差几乎两个数量级。一氧化碳和一氧化碳₂气态氧化物是碳脱氧的产物。气体压力的降低显着增加了碳的脱氧能力。实验研究了不同碳含量的 Fe-70% Ni 熔体中的氧溶解度。实验结果与计算数据充分吻合。