Thermodynamic assessment of the Au–Ga system

Guo, Cuiping; Li, Changrong; Du, Zhenmin

doi:10.1016/j.jallcom.2010.08.044

Cited by 29 publications

(18 citation statements)

References 28 publications

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“…This result is similar to that obtained by Liu et al [21] However, further experimental investigations to measure the standard enthalpy of formation should be done. Summarizing, a new set of thermodynamic parameters was proposed for thermodynamic description of the binary gold-gallium system.…”

Section: Resultssupporting

confidence: 90%

“…Experimental values reported by Itagaki and Yazawa [23] and Predel and Stein [24] are less negative than the values reported in In the literarure Ref 21,22 there are two different interpretations of this enthalpy temperature dependence. Liu et al [21] assumed temperature independent heat of mixing in this system. They used all available [22] suggested a temperature dependence of the enthalpy of mixing in the liquid Au-Ga system.…”

Section: Resultsmentioning

confidence: 99%

“…The calculated enthalpies of mixing of the liquid Au-Ga alloys are in good agreement with the experimental data Ref 25-28. In both papers Liu et al [21] and Wang et al [22] the substitutional solution model was used to describe liquid phase in this binary alloy. In the present work, the experimental values reported by Itagaki and Yazawa [23] and Predel and Stein [24] were not taken into account in optimization of the liquid phase in Au-Ga system.…”

Section: Resultsmentioning

confidence: 99%

“…fcc(Au) ? a-Au 7 Ga 2 to be 696 K. The temperature of this invariant reaction is different from the result of Cooke and Hume-Rothery [36] which is 688 K. Recently, Liu et al [21] and Wang et al [22] optimized Au-Ga phase diagram by means of CALPHAD (CALculation of PHase Diagrams) method.…”

Section: Phase Diagram Datamentioning

confidence: 93%

“…As far as the Au-Ga binary system is concerned, it was already optimized twice, but under different assumptions. The first assessment was performed in 2010 by Liu et al [21] who took into account the nonstoichiometry of b and c phases, but assumed the heat of mixing of liquid alloys to be temperature independent. In 2011 the next assessment was published by Wang et al [22] who treated all intermetallic phases existing in this system as line compounds.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic Study and Re-optimization of the Au-Ga Binary System

Jendrzejczyk-Handzlik

2017

J. Phase Equilib. Diffus.

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Activities of gallium in the liquid Au-Ga alloys were determined using galvanic cells with the solid oxide electrolyte. The cells of the type:were used in the temperature range from 1050 to 1273 K, and for four alloy compositions x Ga = 0.2, 0.4, 0.6 and 0.8. From the measured e.m.f.'s the activity of gallium was derived, which taken together with the recently measured heat of mixing provided precise description of the thermodynamic properties of the liquid phase. This study was supplemented with DTA experiments which were performed for three alloy compositions, namely 0.15, 0.25 and 0.40 gallium mole fraction. The results of these experiments verified with temperature of respective invariant reactions. Finally, present results, taken together with the information existing in the literature, were used for the calculation of the optimized Au-Ga phase diagram. ThermoCalc software was applied to complete these calculations.

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Section: Resultssupporting

confidence: 90%