Relationship of Surface Tension, Oxygen Partial Pressure, and Temperature for Molten Iron

被引：13
|
作者：
Ozawa, Shumpei [1 ]
Takahashi, Suguru [1 ]
Suzuki, Shoji [2 ]
Sugawara, Hiroharu [2 ]
Fukuyama, Hiroyuki [3 ]
机构：
[1] Tokyo Metropolitan Univ, Dept Aerosp Engn, Tokyo 1910065, Japan
[2] Tokyo Metropolitan Univ, Dept Human Mechatron Syst, Tokyo 1910065, Japan
[3] Tohoku Univ, IMRAM, Sendai, Miyagi 9808577, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2011年 / 50卷 / 11期
基金：
日本科学技术振兴机构;
关键词：
LIQUID-IRON; ALLOYS; NICKEL;
D O I：
10.1143/JJAP.50.11RD05
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Surface tension of molten iron was measured under reducing gas atmosphere of Ar-He-5 vol% H-2 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. (C) 2011 The Japan Society of Applied Physics
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页数：5
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