TY - JOUR
T1 - Thermodynamic properties of aluminum, magnesium, and calcium in molten silicon
AU - Miki, Takahiro
AU - Morita, Kazuki
AU - Sano, Nobuo
N1 - Funding Information:
The authors acknowledge the financial support of ‘‘Research Fellowships of the Japan Society for Promotion of Science for Young Scientists’’ and Kawasaki Steel Corporation.
PY - 1998
Y1 - 1998
N2 - The thermodynamic properties of aluminum, magnesium, and calcium in molten silicon were investigated using a chemical equilibration technique at 1723 to 1848 K, 1698 to 1798 K, and 1723 to 1823 K, respectively. The activity coefficient of aluminum in molten silicon was determined by equilibrating molten silicon-aluminum alloys with solid Al2O3 and Al6Si2O13, that of magnesium was determined by equilibrating molten silicon-magnesium alloys and MgO-SiO2-Al2O3 melts doubly saturated with MgSiO3 and SiO2, and that of calcium was determined by equilibrating molten siliconcalcium alloys with SiO2-saturated CaO-SiO2 melts. The activity coefficients at infinite dilution relative to the pure liquid state were determined as follows log γAl(I)in Sio =-1570/T + 0-236 (1723 to 1848 K) log γMg(I)in Sio = - 4900/T + 1.96 (1698 to 1798 K) log γCa(I)in Sio = -7670/T + 1.53 (1723 to 1823 K).
AB - The thermodynamic properties of aluminum, magnesium, and calcium in molten silicon were investigated using a chemical equilibration technique at 1723 to 1848 K, 1698 to 1798 K, and 1723 to 1823 K, respectively. The activity coefficient of aluminum in molten silicon was determined by equilibrating molten silicon-aluminum alloys with solid Al2O3 and Al6Si2O13, that of magnesium was determined by equilibrating molten silicon-magnesium alloys and MgO-SiO2-Al2O3 melts doubly saturated with MgSiO3 and SiO2, and that of calcium was determined by equilibrating molten siliconcalcium alloys with SiO2-saturated CaO-SiO2 melts. The activity coefficients at infinite dilution relative to the pure liquid state were determined as follows log γAl(I)in Sio =-1570/T + 0-236 (1723 to 1848 K) log γMg(I)in Sio = - 4900/T + 1.96 (1698 to 1798 K) log γCa(I)in Sio = -7670/T + 1.53 (1723 to 1823 K).
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U2 - 10.1007/s11663-998-0073-3
DO - 10.1007/s11663-998-0073-3
M3 - Article
AN - SCOPUS:0032183329
SN - 1073-5615
VL - 29
SP - 1043
EP - 1049
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
IS - 5
ER -