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Influence of Oxygen Partial Pressure on Surface Tension of Molten Type 304 and 316 Stainless Steels Measured by Oscillating Droplet Method Using Electromagnetic Levitation

机译:氧分压对电磁悬浮振动滴法测量的304和316不锈钢熔体表面张力的影响

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摘要

Surface tension of molten SUS304 and SUS316 stainless steels was measured by an oscillating droplet method using electromagnetic levitation furnace to investigate the influence of oxygen partial pressure, P_(O_2), of atmosphere on surface tension and its temperature coefficient. We successfully measured the surface tension of molten stainless steels over a wide temperature range including an undercooling condition under Ar-He-5 vol.%H_2 and Ar-He mixed gases. Although the surface tension of molten SUS304 stainless steel decreased with increasing temperature under the Ar-He-5 vol.%H_2 mixed gas, the surface tension showed a boomerang temperature dependence when P_(O_2) was fixed at 10~(-2) Pa under the Ar-He mixed gas; and surface tension increased and then decreased with increasing temperature. When the surface tension of molten SUS316 stainless steel was measured under the Ar-He-5 vol.%H_2 and Ar-He mixed gases, the surface tension increased with increasing temperature regardless of the atmospheric gas due to the large sulfur content. The uncertainty of the measurement was evaluated as less than 5% in this study.
机译:利用电磁悬浮炉,采用振荡滴法测量了熔融SUS304和SUS316不锈钢的表面张力,研究了大气中氧分压P_(O_2)对表面张力及其温度系数的影响。我们成功地在宽温度范围内测量了熔融不锈钢的表面张力,包括在Ar-He-5 vol。%H_2和Ar-He混合气体下的过冷条件下。尽管在Ar-He-5 vol。%H_2混合气体下,熔融SUS304不锈钢的表面张力随温度的升高而降低,但当P_(O_2)固定为10〜(-2)Pa时,表面张力却显示出回旋镖温度依赖性。在氩氦混合气体下;表面张力随温度升高先升高后降低。当在Ar-He-5体积%H_2和Ar-He混合气体下测量熔融SUS316不锈钢的表面张力时,由于大气中的硫含量较高,所以与大气温度无关,表面张力会随温度升高而增加。在这项研究中,测量的不确定度小于5%。

著录项

  • 来源
    《ISIJ international》 |2014年第9期|2097-2103|共7页
  • 作者单位

    Department of Mechanical Science and Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba, 275-0016 Japan;

    Tokyo Metropolitan University Japan Patent Office, 3-4-3 Kasumigaseki, Chiyoda-ku, Tokyo, 100-8915 Japan;

    System Design and Management Research Institute, Keio University, 1-1, Hiyoshi 4-chome, Kohoku-ku, Yokohama, 223-8526 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

    surface tension; molten stainless steel; oxygen adsorption; oxygen partial pressure; electromagnetic levitation;

    机译:表面张力;熔融不锈钢;氧吸附氧分压电磁悬浮;
  • 入库时间 2022-08-17 23:59:42

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