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Investigation of the Welling Characteristics of Liquid Iron on Mullite by Sessile Drop Technique

机译：滴滴法研究莫来石上铁水的渗出特性

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摘要

In the present work, reactions occurring between molten iron containing varying amounts of oxygen and mullite substrate were investigated through optical Sessile drop experiments. The reactions were followed in static as well as dynamic modes through contact angle measurements. Further, the reactions were followed as functions of time, temperature and oxygen partial pressure. The latter was changed by means of imposing a gas mixture of Ar-CO-CO_2 into the furnace. The results showed that the contact angle between the substrate and the iron in purified argon gas was lower than the contact angles reported in literature for alumina and silica. Formation of a ternary slag during the reaction was observed and was subjected to SEM and EDS analysis. The thermodynamic criteria for slag formation and possible mechanisms of the reaction are discussed in the light of the experiments. The results are of relevance in understanding the mechanism of corrosion of aluminosilicate refractories by molten iron.
机译：在本工作中，通过光学无滴实验研究了含不同量氧气的铁水与莫来石基质之间发生的反应。通过接触角测量以静态和动态模式跟踪反应。此外，反应随时间，温度和氧分压而变化。通过将Ar-CO-CO_2的气体混合物注入炉中来改变后者。结果表明，纯氩气中的底物与铁之间的接触角低于文献中报道的氧化铝和二氧化硅的接触角。观察到反应期间三元炉渣的形成，并进行SEM和EDS分析。根据实验讨论了炉渣形成的热力学标准和可能的反应机理。该结果与理解铁水对铝硅酸盐耐火材料的腐蚀机理有关。

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