TY - JOUR
T1 - Relationship of surface tension, oxygen partial pressure, and temperature for molten iron
AU - Ozawa, Shumpei
AU - Takahashi, Suguru
AU - Suzuki, Shoji
AU - Sugawara, Hiroharu
AU - Fukuyama, Hiroyuki
PY - 2011/11
Y1 - 2011/11
N2 - 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.
AB - 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.
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U2 - 10.1143/JJAP.50.11RD05
DO - 10.1143/JJAP.50.11RD05
M3 - Article
AN - SCOPUS:82455175708
SN - 0021-4922
VL - 50
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 11 PART 2
M1 - 11RD05
ER -