The goal of the current work is to develop a methodology to study the wetting behaviour of two immiscible liquids at high temperatures, and to investigate the parameters which influence the wetting properties. The wetting behaviour between synthetic FeMn alloy and synthetic slag has been investigated using the sessile drop technique. Two experimental procedures were implemented under both Ar and CO atmospheres: (a) FeMn alloy and slag placed next to each other on a graphite substrate; and (b) one droplet dropped on top of the other. FactSage is applied to calculate reactions and their equilibrium. The current work presents and demonstrates the suggested methodologies. The results indicate that the wetting between slag and FeMn alloy is relatively stable at temperatures up to 100 K above their melting points, regardless of the droplet size and atmosphere. MnO reduction is accelerated at higher temperature, especially in CO, thus increasing the wetting between FeMn alloy and slag, eventually fusing together. At even higher temperature, slag separates from FeMn alloy due to changing chemical composition during non-equilibrium MnO reduction.

当前工作的目标是开发一种方法来研究两种不混溶液体在高温下的润湿行为，并研究影响润湿性能的参数。已经使用固滴技术研究了合成 FeMn 合金和合成炉渣之间的润湿行为。在 Ar 和 CO 气氛下实施了两个实验程序： (a) FeMn 合金和炉渣在石墨基底上彼此相邻放置；(b) 一滴液滴落在另一滴之上。FactSage 用于计算反应及其平衡。当前的工作提出并演示了建议的方法。结果表明，炉渣和 FeMn 合金之间的润湿在高于其熔点 100 K 的温度下相对稳定，无论液滴大小和气氛如何。MnO 还原在较高温度下会加速，尤其是在 CO 中，从而增加 FeMn 合金和炉渣之间的润湿，最终融合在一起。在更高的温度下，由于在非平衡 MnO 还原过程中化学成分发生变化，炉渣与 FeMn 合金分离。