TY - JOUR
T1 - Oxygen solubility in liquid gallium and liquid indium
AU - Narushima, Takayuki
AU - Sajuti, D.
AU - Saeki, Katsuyuki
AU - Yoshida, Shin ya
AU - Iguchi, Yasutaka
PY - 1995
Y1 - 1995
N2 - The oxygen solubility in liquid gallium or liquid indium equilibrated with solid Ga2O3 or In2O3, respectively, was determined in an alumina crucible which was less reactive than the silica one. After establishment of an equilibrium between the liquid metal (gallium or indium) and an oxide (Ga2O3 or In2O3) formed on the surface of the metal during melting, the oxygen content in quenched gallium or indium was analyzed by the inert gas fusion-IR absorption method. The optimum conditions for oxygen extraction were decided for a furnace power and a bath composition. The temperature dependence of oxygen solubility in liquid gallium or liquid indium was expressed as the following equations: log (Co/mass% in liquid gallium) = -6200/T+2.61 (±0.119) (T: 1123 to approximately 1523 K), log (Co/mass% in liquid indium) = -6600/T+3.77(±0.074) (T: 1073 to approximately 1373 K). Using the temperature dependence of the oxygen solubility in the present work and the standard free energy of formation of Ga2O3 or In2O3 in the literature, the standard free energy change for oxygen dissolution in liquid gallium or liquid indium could be represented as follows: 1/2O2(g) = O (mass%, in liquid gallium), ΔG° = -2.4̄5̄×105+59.6T(J), 1/2O2(g) = O (mass%, in liquid indium), ΔG° = -1.7̄9̄×105+33.8T(J).
AB - The oxygen solubility in liquid gallium or liquid indium equilibrated with solid Ga2O3 or In2O3, respectively, was determined in an alumina crucible which was less reactive than the silica one. After establishment of an equilibrium between the liquid metal (gallium or indium) and an oxide (Ga2O3 or In2O3) formed on the surface of the metal during melting, the oxygen content in quenched gallium or indium was analyzed by the inert gas fusion-IR absorption method. The optimum conditions for oxygen extraction were decided for a furnace power and a bath composition. The temperature dependence of oxygen solubility in liquid gallium or liquid indium was expressed as the following equations: log (Co/mass% in liquid gallium) = -6200/T+2.61 (±0.119) (T: 1123 to approximately 1523 K), log (Co/mass% in liquid indium) = -6600/T+3.77(±0.074) (T: 1073 to approximately 1373 K). Using the temperature dependence of the oxygen solubility in the present work and the standard free energy of formation of Ga2O3 or In2O3 in the literature, the standard free energy change for oxygen dissolution in liquid gallium or liquid indium could be represented as follows: 1/2O2(g) = O (mass%, in liquid gallium), ΔG° = -2.4̄5̄×105+59.6T(J), 1/2O2(g) = O (mass%, in liquid indium), ΔG° = -1.7̄9̄×105+33.8T(J).
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U2 - 10.2320/jinstmet1952.59.1_37
DO - 10.2320/jinstmet1952.59.1_37
M3 - Article
AN - SCOPUS:0029220116
SN - 0021-4876
VL - 59
SP - 37
EP - 43
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 1
ER -