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首页> 外文期刊>ISIJ international >Tailoring Model Surface and Wetting Experiment for a Fundamental Understanding of Hot-dip Galvanizing
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Tailoring Model Surface and Wetting Experiment for a Fundamental Understanding of Hot-dip Galvanizing

机译：量身定制模型表面和润湿实验，从根本上了解热浸镀锌

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摘要

The wettability of molten zinc-aluminum on a steel substrate is an important issue in the hot-dip galvanizing process for automotive applications. Especially, the effects of surface oxides have been current topics during recent years. However wetting behavior under the effects of oxide has not been well illustrated due to the complexity of the surface of actually used steel. In this work, wetting experiments using molten zinc-aluminum were applied to tailored model surfaces of iron to investigate its fundamental behavior. Well-defined aluminum oxide islands were successfully patterned on iron surfaces by physical vapor deposition with masks for this purpose. The sessile drop method with zinc-aluminum was conducted in a laboratory-made apparatus. This apparatus included a unique spin-off technique that allowed us to make an interface analysis at the early stage of wetting. The initial contact angles of the patterned samples were revealed to have followed the Cassie equation. This indicates that the wetting of zinc-aluminum on an oxide-iron system can be treated as if it is a static wetting in its initial stage, even though this system is originally considered as a reactive wetting. The molten zinc-aluminum on a patterned sample diffused into the interface between the oxide islands and the substrate in the stage after initial wetting. It is suggested that this manner of zinc-aluminum diffusion plays a key role in the reaction and formation of the interface during the hot-dip galvanizing process.
机译：熔融锌铝在钢基材上的润湿性是汽车应用热浸镀锌工艺中的重要问题。特别地，近年来，表面氧化物的影响已成为当前的话题。然而，由于实际使用的钢表面的复杂性，尚未很好地说明在氧化物作用下的润湿行为。在这项工作中，将使用熔融锌铝的润湿实验应用于铁的定制模型表面，以研究其基本行为。为此，通过物理气相沉积和掩膜成功地在铁表面上对轮廓分明的氧化铝岛进行了构图。在实验室制造的设备中使用锌-铝进行无滴法。该仪器包括独特的剥离技术，使我们能够在润湿的早期阶段进行界面分析。揭示出图案化样品的初始接触角遵循Cassie方程。这表明即使最初将锌铝在氧化铁系统上的润湿视为静态润湿，也可以将其视为静态润湿。在初始润湿后的阶段中，图案化样品上的熔融锌铝扩散到氧化物岛和基材之间的界面中。建议在热浸镀锌过程中锌铝扩散的这种方式在界面的反应和形成中起关键作用。

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  • 来源
    《ISIJ international》 |2011年第10期|p.1703-1709|共7页
  • 作者

    Takashi KAWANO; Frank Uwe RENNER;

  • 作者单位

    Max-Planck-lnstitut fur Eisenforschung GmbH, Max-Planck-StraBe 1, 40237 Dusseldorf, Germany,Steel Research Laboratory, JFE Steel Corporation, 1 Kawasaki-cho, Chuo-ku, Chiba, 260-0835 Japan;

    Max-Planck-lnstitut fur Eisenforschung GmbH, Max-Planck-StraBe 1, 40237 Dusseldorf, Germany;

  • 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

    galvanizing; zinc wetting; reactive wetting; cassie equation; oxide patterning;

    机译：镀锌锌润湿反应性润湿卡西方程氧化物图案;

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