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2011 №10 (11) 2011 №10 (02)

The Paton Welding Journal 2011 #10
The Paton Welding Journal, 2011, #10, 2-4 pages  

PREDICTION OF THERMODYNAMIC PROPERTIES OF MELTS OF MgO-Al2O3-SiO2-CaF2 SYSTEM

I.A. GONCHAROV1, V.I. GALINICH1, D.D. MISHCHENKO1, M.A. SHEVCHENKO2 and V.S. SUDAVTSOVA2


1E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
2Taras Shevchenko National University of Kiev, Ukraine
 
 
Abstract
The calculation procedure is proposed for prediction of thermodynamic properties of simple slag melts, allowing for liquidus coordinates of constitutional diagrams. Excess integral functions calculated for more complex systems are given. The possibility of controlling the thermodynamic activity of SiO2 in slag and, hence, silicon reduction process is shown.
 
 
Keywords: arc welding, high-strength steels, fused flux, slag melts, thermodynamic properties, SiO2 activity
 
 
Received:                ??.??.??
Published:               28.10.11
 
 
References
1. Fabrichnaya, O. (2000) Thermodynamic modelling of melting in the system FeO-MgO-SiO2-O2 at pressure of 1 bar. CALPHAD, 24(6), 113-131.
2. Wang, Ch., Zinkevich, M., Aldinger, F. (2004) On the thermodynamic modelling of the Zr-O system. Ibid., 28, 281-292.
3. Chen, M., Hallstedt, B., Gauckler, L.J. (2004) Thermodynamic modelling of the ZrO2-YO1.5 system. Solid State Ionics, 170, 255-274.
4. Shornikov, S.I. (2006) Thermodynamic properties of melts of system MgO-SiO2. Vestnik Otd. Nauk o Zemle RAN, 1(22), 1-3.
5. Shornikov, S.I. (2004) Thermodynamic properties of melts of system Al2O3-SiO2. Ibid., 1, 1-3.
6. Muggianu, Y.O., Gambino, N.N., Bros, J.P. (2001) Enthalpie formation of liquid alloys bismuth-gallium-tin at 223 °C. J. Alloys and Compounds, 321(1), 183-200.
7. Jung, I.-H., Decterov, S.A., Peuon, A.D. (2004) Critical thermodynamic evaluation an optimization of the MgO-Al2O3-SiO2 systems. J. Phase Equilibria Diffusion, 25(4), 329-345.

Suggested Citation

I.A. GONCHAROV1, V.I. GALINICH1, D.D. MISHCHENKO1, M.A. SHEVCHENKO2 and V.S. SUDAVTSOVA2 (2011) PREDICTION OF THERMODYNAMIC PROPERTIES OF MELTS OF MgO-Al2O3-SiO2-CaF2 SYSTEM. The Paton Welding J., 10, 2-4.