Influence of oxygen adsorption on surface tension of molten nickel measured under reducing gas atmosphere

S. Ozawa; S. Takahashi; N. Watanabe; H. Fukuyama

doi:10.1007/s10765-014-1674-5

Influence of oxygen adsorption on surface tension of molten nickel measured under reducing gas atmosphere

S. Ozawa, S. Takahashi, N. Watanabe, H. Fukuyama

Division of Inorganic Material Research

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The surface tension of molten nickel was measured under a reducing gas atmosphere of Ar–He–5 vol% H₂ by an oscillating droplet method using electromagnetic levitation. The influence of the temperature dependence of the oxygen partial pressure of the gas on the surface tension was investigated. The surface tension of molten nickel was successfully measured over the very wide temperature range of 750 K, which included undercooling conditions. The temperature dependence of the surface tension did not exhibit a linear relationship but had a peculiar kink at around 1600 K, due to competition between the temperature dependence of the oxygen partial pressure and that of the oxygen adsorption equilibrium constant.

Original language	English
Pages (from-to)	1705-1711
Number of pages	7
Journal	International Journal of Thermophysics
Volume	35
Issue number	9-10
DOIs	https://doi.org/10.1007/s10765-014-1674-5
Publication status	Published - 2014 Oct

Keywords

Electromagnetic levitation
Molten nickel
Oscillating droplet method
Oxygen adsorption
Surface tension

ASJC Scopus subject areas

Condensed Matter Physics

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10.1007/s10765-014-1674-5

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title = "Influence of oxygen adsorption on surface tension of molten nickel measured under reducing gas atmosphere",

abstract = "The surface tension of molten nickel was measured under a reducing gas atmosphere of Ar–He–5 vol% H2 by an oscillating droplet method using electromagnetic levitation. The influence of the temperature dependence of the oxygen partial pressure of the gas on the surface tension was investigated. The surface tension of molten nickel was successfully measured over the very wide temperature range of 750 K, which included undercooling conditions. The temperature dependence of the surface tension did not exhibit a linear relationship but had a peculiar kink at around 1600 K, due to competition between the temperature dependence of the oxygen partial pressure and that of the oxygen adsorption equilibrium constant.",

keywords = "Electromagnetic levitation, Molten nickel, Oscillating droplet method, Oxygen adsorption, Surface tension",

author = "S. Ozawa and S. Takahashi and N. Watanabe and H. Fukuyama",

note = "Funding Information: This work was supported by JSPS KAKENHI Grant Number 24760617. This work was partially supported by Grant-in-Aids of the Japanese Science and Technology (JST) Agency. The authors gratefully acknowledge Prof. T. Hibiya (Keio Univ.), Prof. M. Watanabe (Gakushuin Univ.), and Prof. T. Tsukada (Tohoku Univ.) for their helpful discussions. One of the authors (ST) wishes to thank the Sasakawa Scientific Research Grant from The Japan Science Society. We would like to thank Mr. Nagasawa (Canon Machinery Inc.) for giving us the chance to use the oxygen sensor. We also thank Dr. K. Tanaka (Sumitomo Metal Mining Co., Ltd.) for providing us with high-purity nickel. Publisher Copyright: {\textcopyright} Springer Science+Business Media New York 2014.",

year = "2014",

month = oct,

doi = "10.1007/s10765-014-1674-5",

language = "English",

volume = "35",

pages = "1705--1711",

journal = "International Journal of Thermophysics",

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T1 - Influence of oxygen adsorption on surface tension of molten nickel measured under reducing gas atmosphere

AU - Ozawa, S.

AU - Takahashi, S.

AU - Watanabe, N.

AU - Fukuyama, H.

N1 - Funding Information: This work was supported by JSPS KAKENHI Grant Number 24760617. This work was partially supported by Grant-in-Aids of the Japanese Science and Technology (JST) Agency. The authors gratefully acknowledge Prof. T. Hibiya (Keio Univ.), Prof. M. Watanabe (Gakushuin Univ.), and Prof. T. Tsukada (Tohoku Univ.) for their helpful discussions. One of the authors (ST) wishes to thank the Sasakawa Scientific Research Grant from The Japan Science Society. We would like to thank Mr. Nagasawa (Canon Machinery Inc.) for giving us the chance to use the oxygen sensor. We also thank Dr. K. Tanaka (Sumitomo Metal Mining Co., Ltd.) for providing us with high-purity nickel. Publisher Copyright: © Springer Science+Business Media New York 2014.

PY - 2014/10

Y1 - 2014/10

N2 - The surface tension of molten nickel was measured under a reducing gas atmosphere of Ar–He–5 vol% H2 by an oscillating droplet method using electromagnetic levitation. The influence of the temperature dependence of the oxygen partial pressure of the gas on the surface tension was investigated. The surface tension of molten nickel was successfully measured over the very wide temperature range of 750 K, which included undercooling conditions. The temperature dependence of the surface tension did not exhibit a linear relationship but had a peculiar kink at around 1600 K, due to competition between the temperature dependence of the oxygen partial pressure and that of the oxygen adsorption equilibrium constant.

AB - The surface tension of molten nickel was measured under a reducing gas atmosphere of Ar–He–5 vol% H2 by an oscillating droplet method using electromagnetic levitation. The influence of the temperature dependence of the oxygen partial pressure of the gas on the surface tension was investigated. The surface tension of molten nickel was successfully measured over the very wide temperature range of 750 K, which included undercooling conditions. The temperature dependence of the surface tension did not exhibit a linear relationship but had a peculiar kink at around 1600 K, due to competition between the temperature dependence of the oxygen partial pressure and that of the oxygen adsorption equilibrium constant.

KW - Electromagnetic levitation

KW - Molten nickel

KW - Oscillating droplet method

KW - Oxygen adsorption

KW - Surface tension

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SN - 0195-928X

VL - 35

SP - 1705

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JO - International Journal of Thermophysics

JF - International Journal of Thermophysics

IS - 9-10

ER -

Influence of oxygen adsorption on surface tension of molten nickel measured under reducing gas atmosphere

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Keywords

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