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Normal Spectral Emissivity Measurement of Liquid Iron and Nickel Using Electromagnetic Levitation in Direct Current Magnetic Field

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Abstract

Normal spectral emissivities of liquid iron and nickel were measured for wavelengths of 780 to 920 nm by direct measurement of normal spectral radiance using electromagnetic levitation in a direct current (DC) magnetic field. A DC magnetic field suppressed surface oscillation and the transitional motion of the liquid metal droplets. The normal spectral emissivities of both liquid iron and nickel show weak negative wavelength dependence and have negligible temperature dependence. The normal spectral emissivities of liquid iron and nickel at 807 nm were determined respectively as 0.394 ± 0.012 (1600 K to 1950 K (1327 °C to 1677 °C)) and 0.368 ± 0.004 (1720 K to 1825 K (1447 °C to 1552 °C)). The experimental uncertainty used here is double the value of the standard deviation.

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Acknowledgment

This work was financially supported by SENTAN, Japan Science and Technology Agency (JST).

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Authors and Affiliations

  1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Miyagi, Sendai, 980-8577, Japan

    Hidekazu Kobatake (Assistant Professor), Hossein Khosroabadi (Postdoctor) & Hiroyuki Fukuyama (Professor)

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  1. Hidekazu Kobatake
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  2. Hossein Khosroabadi
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  3. Hiroyuki Fukuyama
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Corresponding author

Correspondence to Hiroyuki Fukuyama.

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Manuscript submitted August 1, 2011.

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Kobatake, H., Khosroabadi, H. & Fukuyama, H. Normal Spectral Emissivity Measurement of Liquid Iron and Nickel Using Electromagnetic Levitation in Direct Current Magnetic Field. Metall Mater Trans A 43, 2466–2472 (2012). https://doi.org/10.1007/s11661-012-1101-0

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