The interfacial oxygen transfer rate is one of the main factors to control the composition of alloys. The commonly employed method of studying the interfacial oxygen transfer rate is the chemical composition analysis; however, it is difficult to be studied in situ. Here, a new method of measuring the oxygen transfer rate at the gas–slag and slag–metal interfaces was reported based on electrochemical analyses. The interfacial oxygen transfer rate in the smelting process of Inconel 718 superalloy was investigated at 1723, 1773, 1823, and 1873 K. The experimental results show that the electrochemical method can measure the real-time oxygen content; hence, this method is promising in controlling the oxygen content in alloys. As the temperature increased, both the equilibrium oxygen content and the rate of oxygen absorption increased significantly, and the increase was the most obvious when the temperature was 1873 K. The possible reason is that the increase in temperature weakens the mass transfer resistance of the electric double layer at the interface, thus accelerating the oxygen transfer rate.

界面氧转移速率是控制合金组成的主要因素之一。研究界面氧转移速率的常用方法是化学成分分析。但是，很难进行现场研究。在这里，基于电化学分析，已经报道了一种新的测量气体-炉渣和炉渣-金属界面上的氧气传输速率的方法。研究了Inconel 718合金在熔炼过程中的界面氧转移速率，分别为1723、1773、1823和1873K。因此，该方法有望控制合金中的氧含量。随着温度升高，平衡氧含量和氧吸收速率均显着增加，