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首页> 外文期刊>ISIJ international >Effects of Interfacial Properties between Molten Iron and Alumina on Neck Growth of Alumina Balls at Sintering in Molten Iron
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Effects of Interfacial Properties between Molten Iron and Alumina on Neck Growth of Alumina Balls at Sintering in Molten Iron

机译：铁水与氧化铝的界面性能对铁水烧结氧化铝球颈长的影响

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摘要

The effects of interfacial properties such as interfacial tension and wettability on the adhesion, agglomeration, and coalescence of inclusions on the immersion nozzle in a continuous casting process have not yet been evaluated quantitatively. In the present work, we focused on the neck growth of alumina balls at sintering because the adhesion, agglomeration, and coalescence of inclusions are regarded as being the consequence of sintering of oxides. We compared the neck growth of alumina balls at sintering in molten iron with that under an Ar gas atmosphere in order to clarify the effects of interfacial properties between alumina balls and molten iron on the sintering of alumina balls in molten iron. We found that neck growth in molten iron proceeds much faster than that under an Ar gas atmosphere. In addition, an equation for the neck growth of alumina balls in molten iron was formulated by evaluating the interfacial properties, i.e., the interfacial tension and wettability, between alumina balls and molten iron. The calculated results derived by considering the capillary phenomena of molten iron at the gap between alumina balls as the effect of wettability were in reasonable agreement with the experimental results in molten iron. These findings show that the non-wetting by molten iron of alumina balls promotes neck growth of alumina balls at sintering in molten iron.
机译：在连续铸造过程中，界面性能（例如界面张力和润湿性）对浸没喷嘴上夹杂物的附着力，附聚和聚结的影响尚未得到定量评估。在当前的工作中，我们将重点放在烧结时氧化铝球的颈长上，因为夹杂物的附着，附聚和聚结被认为是氧化物烧结的结果。我们比较了在铁水中烧结时氧化铝球的颈长与在氩气气氛下的颈长，以阐明氧化铝球和铁水之间的界面性质对铁水中氧化铝球烧结的影响。我们发现，铁水中的颈部生长比Ar气氛下的生长快得多。另外，通过评价氧化铝球与铁水之间的界面性质，即界面张力和润湿性，制定了用于铁水中氧化铝球颈长的方程。通过将氧化铝球之间的间隙处的铁水的毛细现象作为润湿性的影响而得出的计算结果与铁水的实验结果合理地吻合。这些发现表明，在铁水中烧结时，铁水对铝球的不润湿促进了氧化铝球的颈长。

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  • 来源
    《ISIJ international》 |2014年第6期|1195-1203|共9页
  • 作者

    Masashi NAKAMOTO; Toshihiro TANAKA; Masanori SUZUKI; Kenji TAGUCHI; Yuichi TSUKAGUCHI; Takaiku YAMAMOTO;

  • 作者单位

    Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871 Japan;

    Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871 Japan;

    Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871 Japan;

    Hasaki Research and Development Center, Nippon Steel & Sumitomo Metal Corporation, Sunayama 16-1, Kamisu, Ibaraki, 314-0255 Japan;

    Hasaki Research and Development Center, Nippon Steel & Sumitomo Metal Corporation, Sunayama 16-1, Kamisu, Ibaraki, 314-0255 Japan;

    Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871 Japan;

  • 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

    neck growth; sintering; alumina; molten iron; wettability;

    机译：颈部生长;烧结;氧化铝铁水;润湿性;

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