TY - JOUR
T1 - Thermodynamic properties of selenium in Ag-Pb alloy and lead oxide phases at 1273 K
AU - Ueda, Shigeru
AU - Katsube, Ryo
AU - Yamaguchi, Katsunori
PY - 2009/5
Y1 - 2009/5
N2 - The distribution ratio of Se between Ag-Pb alloy and PbO phases was investigated at 1273 K. A. chemical equilibrium technique was used for the measurement. The oxygen partial pressure was in equilibrium with both the phases, and it was measured by an EMF method. The distribution ratio, defined as the mole fraction of Se in PbO to the mole fraction of Se in metal, was plotted against the oxygen partial pressure. The distribution ratio decreased with an increase in the oxygen partial pressure. The slope of the plot indicates that Se dissolves in the PbO phase as oxide, which is unreasonable. The activity coefficient of Se in the Ag-Pb alloy was also measured, and it was found to decrease with an increase in the concentration of Ag. Se dissolved in the PbO phase in the non-oxide form. The activity coefficient of Se in Ag was estimated as 0.0009 at 1273 K.
AB - The distribution ratio of Se between Ag-Pb alloy and PbO phases was investigated at 1273 K. A. chemical equilibrium technique was used for the measurement. The oxygen partial pressure was in equilibrium with both the phases, and it was measured by an EMF method. The distribution ratio, defined as the mole fraction of Se in PbO to the mole fraction of Se in metal, was plotted against the oxygen partial pressure. The distribution ratio decreased with an increase in the oxygen partial pressure. The slope of the plot indicates that Se dissolves in the PbO phase as oxide, which is unreasonable. The activity coefficient of Se in the Ag-Pb alloy was also measured, and it was found to decrease with an increase in the concentration of Ag. Se dissolved in the PbO phase in the non-oxide form. The activity coefficient of Se in Ag was estimated as 0.0009 at 1273 K.
KW - Activity coefficient
KW - Distribution ratio
KW - Lead oxide
KW - Selenium
KW - Silver-lead alloy
KW - Thermodynamics
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U2 - 10.2320/matertrans.M2009021
DO - 10.2320/matertrans.M2009021
M3 - Article
AN - SCOPUS:67650493551
SN - 1345-9678
VL - 50
SP - 1148
EP - 1151
JO - Materials Transactions
JF - Materials Transactions
IS - 5
ER -