Measurement of activity of gallium in GaSbIn alloys by emf method using zirconia as solid electrolyte

Katayama, Iwao; Nakayama, Jun-ichiro; Ikura, Tsuneo; Tanaka, Toshihiro; Kozuka, Zensaku; Iida, Tsutomu

doi:10.1016/0022-3093(93)90204-b

Cited by 14 publications

(2 citation statements)

References 10 publications

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“…Lack of sufficient thermodynamic data especially on the free energy of mixing and activity data has been identified as a great challenge in the field of liquid alloy developments. Although some experimental investigations have been carried out [1][2][3][4][5][6][7]. Still, there exists quantitative data gaps for the multicomponent liquid alloys due to the difficulties associated with high-temperature experiments.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Prediction of the Free Energy of Mixing and Activities of some Goldbased Binary Liquid Alloys

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2020

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The free energy of mixing and activities of gold in selected six Au-based binary liquid Au-Cu, Au-Zn, Au-Pb, Au-Ni, Au-Sn and Al-Au alloys at different working temperatures have been studied using the quasi-chemical approximation model (QCAM). The predicted free enegry of mixing and activities results were compared with available experimental values. The predicted results are in reasonable agreement with reported experimental data and confirms that the model is reliable and, thus should serve as an alternative for the prediction of thermodynamic properties of binary liquid alloys. Keywords: free energy of mixing, activities, Au, Binary liquid alloys, concentration

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Section: Introductionmentioning

confidence: 99%

Thermodynamic Prediction of the Free Energy of Mixing and Activities of some Goldbased Binary Liquid Alloys

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2020

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“…The activities of gallium in the liquid Ga‐In [1–9] alloys show moderately positive deviations from Raoult's law. Klinedinst et al [4] applied the emf method with zirconia solid electrolyte to the Ga‐In system for the first time to determine gallium activity.…”

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Activity measurement of liquid Ga‐In‐Te alloys by emf method with stabilized zirconia

Iwao

Yamazaki

Nakano

et al. 2003

Scand Jof Metallurgy

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Electromotive force of galvanic cells with zirconia solid electrolytes was measured to determine the activity of gallium in liquid Ga‐In‐Te alloys in the temperature range of 1000 to 1200 K along 3 psuedobinary lines of (InyTe1−y)‐Ga where y= 0.25, 0.50 and 0.75. The mixture of Ga and Ga2O3 was used as a reference electrode. The activity curves of Ga are very complicated at 1073 K. Isoactivity curves at 1073 K in the ternary Ga‐In‐Te alloys were derived by combining the activity data of Ga‐In and Ga‐Te alloys. Using Darken's equation, 2 binary data of Ga‐In and Ga‐Te and ternary data in this study, ΔGXS at 1073 K were derived. The results were compared with those from 3 model calculations proposed by Toop, Kohler and Chou to show better agreement between the experimental values and those by Toop's and Chou's models.

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Measurement of activity of gallium in liquid Ga‐Sb‐Ge alloys by EMF method with zirconia as solid electrolyte

Katayama

Fukuda

Hattori

1998

Ber Bunsenges Phys Chem

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The emf of galvanic cells with zirconia solid electrolytes was measured from 975 to 1242 K on binary Ga‐Ge alloys and from 1058 to 1236 K on ternary Ga‐Sb‐Ge alloys by use of Ga‐Ga2O3 as a reference electrode. From the emf values the activity of gallium in the liquid alloys is determined. At 1073 K the activity of gallium in the Ga‐Ge alloys and in the three pseudobinary alloys Ga‐(SbyGe1‐y) where y=0.25, 0.50 and 0.75 shows small negative deviations from ideality. Isoactivity curves in the ternary Ga‐Sb‐Ge alloys were derived by combining the activity data of Ga‐Sb, Ga‐Ge and the ternary alloys. The shape of the curves at 1073 K is simple in the Ga‐poor region, but shows a very small wavy form with increasing Ga concentration. Isovalues curves in the excess Gibbs energies of mixing in the ternary alloys are derived from Darken's method, and the results are compared with the model calculation proposed by Chou based on the experimental data in three binary systems. The shape of isovalue curves in ΔGxs is similar to those obtained from Chou's method, but the agreement between them in the values is not good.

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Measurement of activity of gallium in GaSbIn alloys by emf method using zirconia as solid electrolyte

Cited by 14 publications

References 10 publications

Thermodynamic Prediction of the Free Energy of Mixing and Activities of some Goldbased Binary Liquid Alloys

Thermodynamic Prediction of the Free Energy of Mixing and Activities of some Goldbased Binary Liquid Alloys

Activity measurement of liquid Ga‐In‐Te alloys by emf method with stabilized zirconia

Measurement of activity of gallium in liquid Ga‐Sb‐Ge alloys by EMF method with zirconia as solid electrolyte

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