Relationship of surface tension, oxygen partial pressure, and temperature for molten iron

Shumpei Ozawa, Suguru Takahashi, Shoji Suzuki, Hiroharu Sugawara, Hiroyuki Fukuyama

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Surface tension of molten iron was measured under reducing gas atmosphere of Ar-He-5 vol% H2 by an oscillating droplet method using electromagnetic levitation. The temperature dependence of surface tension did not exhibit a linear relationship but revealed a peculiar kink at around 1810 K, due to competition between the temperature dependence of oxygen partial pressure and that of the oxygen adsorption equilibrium constant. We successfully derived the surface tension of molten iron as functions of both oxygen partial pressure and temperature. Furthermore, the standard enthalpy and entropy for oxygen adsorption reaction on molten iron were also estimated.

Original languageEnglish
Article number11RD05
JournalJapanese journal of applied physics
Volume50
Issue number11 PART 2
DOIs
Publication statusPublished - 2011 Nov 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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