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Metallurgical and Materials Transactions B

, Volume 50, Issue 5, pp 2454–2458 | Cite as

Compositional Dependence of Normal Spectral Emissivity of Molten Cu-Fe Alloy

  • Eita ShojiEmail author
  • Ryuji Takahashi
  • Shosei Isogai
  • Naoto Ito
  • Masaki Kubo
  • Takao Tsukada
  • Hiroyuki Fukuyama
Article
  • 116 Downloads

Abstract

Normal spectral emissivity of molten Cu-Fe alloy with different compositions was measured at the wavelength of 807 nm using an electromagnetic levitator superimposed with a static magnetic field, which is capable of producing accurate normal spectral emissivity data because the applied static magnetic field suppresses translational and surface oscillations of a levitated sample to consequently reduce measurement uncertainties. Cu-Fe alloy samples used in this study were Cu97Fe3, Cu93Fe7, Cu92Fe8, Cu90Fe10, Cu80Fe20, and Cu70Fe30. The strength of the static magnetic field and temperature ranged from 3.0 to 3.5 T and 1350 to 1750 K, respectively. The measured normal spectral emissivity indicated negligible temperature dependence in a wide temperature range. In contrast, the compositional dependence indicated a distinct tendency in which the emissivity increased markedly with the composition of Fe up to 10 at pct.

Notes

Acknowledgment

This study was supported by the Iron and Steel Institute of Japan (ISIJ) Research Promotion Grant.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2019

Authors and Affiliations

  • Eita Shoji
    • 1
    Email author
  • Ryuji Takahashi
    • 1
  • Shosei Isogai
    • 1
  • Naoto Ito
    • 1
  • Masaki Kubo
    • 1
  • Takao Tsukada
    • 1
  • Hiroyuki Fukuyama
    • 2
  1. 1.Department of Chemical EngineeringTohoku UniversitySendaiJapan
  2. 2.Institute of Multidisciplinary Research for Advanced MaterialsTohoku UniversitySendaiJapan

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