Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Silicon-Oxygen Equilibrium in Liquid Iron
Sachio MatobaKoki GunjiTakeshi Kuwana
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1959 Volume 45 Issue 12 Pages 1328-1334

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Abstract

The equilibrium of silicon and oxygen dissolved in liquid iron was studied at temperatures of 1570°C, 1625°C and 1680°C respectively.
Fe-Si alloys were melted in pure silica crucibles in the H2-H2O gas mixtures for 10-20h.
Silicon in liquid iron increased its activity coefficient even with a low-silicon concentration, while it reduced the activity coefficient of oxygen.
The products of silicon and oxygen were nearly constant in the range of 0-3.0% silicon.
These data obtained were summarized as follows:
3. The interaction parameter of silicon in liquid iron, e'Si:
4. The effect of silicon on the activity coefficient of oxygen in liquid iron, e(Si)0:
5. The activity coefficient of silicon in liquid iron with a very low silicon concentration (in mole-fraction), γ°Si:

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© The Iron and Steel Institute of Japan
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