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首页> 外文期刊>ISIJ international >Electrochemical Method for Controlling the Interfacial Oxygen in Molten Fe with ZrO_2 Based Solid Electrolyte
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Electrochemical Method for Controlling the Interfacial Oxygen in Molten Fe with ZrO_2 Based Solid Electrolyte

机译：ZrO_2基固体电解质控制熔融铁界面氧的电化学方法。

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摘要

The control of the interfacial oxygen concentration in molten steel by an electrochemical method using ZrO_2 based solid electrolyte was suggested in this study. Oxygen ions were transferred through the solid electrolyte by varying the chemical potential difference and applying an external electric potential between the cathode and the anode. By applying an external electric potential, the oxygen concentration was controlled below 3 ppm at the molten Fe/ZrO_2 interface. The electrochemical reaction rate of oxygen removal was found to be faster than the estimated diffusion of oxygen through the boundary layer of molten steel. Thus, the slow diffusion of oxygen through the boundary layer creates a steady state oxygen concentration profile, where an oxygen depleted layer at the molten Fe/ZrO_2 interface is present. The oxygen concentration profile in the boundary layer was confirmed using the Glow Discharge Spectroscopy.rnIn this study, the oxygen concentration at the interface could be controlled using an electrochemical method of ZrO_2 based solid electrolyte and achieve a steady state at the interface within the liquid phase boundary layer.
机译：这项研究建议采用基于ZrO_2的固体电解质通过电化学方法控制钢水中的界面氧浓度。通过改变化学势差并在阴极和阳极之间施加外部电势，使氧离子通过固体电解质转移。通过施加外部电势，在熔融的Fe / ZrO_2界面处的氧浓度被控制在3ppm以下。发现除氧的电化学反应速率比估计的氧通过钢水边界层的扩散快。因此，氧通过边界层的缓慢扩散产生稳态的氧浓度分布，其中在熔融的Fe / ZrO_2界面处存在贫氧层。使用辉光放电光谱法确认了边界层中的氧浓度分布。rn在这项研究中，可以使用基于ZrO_2的固体电解质的电化学方法控制界面处的氧浓度，并在液相中的界面处达到稳态边界层。

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  • 来源
    《ISIJ international》 |2009年第12期|1882-1888|共7页
  • 作者

    WOOK KIM; DONG JOON MIN; YOUNG SEOK LEE; JOO HYUN PARK;

  • 作者单位

    Department of Advanced Materials Engineering, Yonsei University, Shinchon-dong 134, Seodaemun-gu, Seoul, Korea;

    Department of Advanced Materials Engineering, Yonsei University, Shinchon-dong 134, Seodaemun-gu, Seoul, Korea;

    Ironmaking Research Group, Technical Research Laboratories, POSCO, Pohang,Korea;

    School of Materials Science and Engineering, University of Ulsan, Moogeo-dong, Nam-gu, Ulsan, Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electrochemical method; ZrO_2 solid electrolyte; interfacial oxygen; oxygen deplete layer;

    机译：电化学方法ZrO_2固体电解质;界面氧贫氧层;

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