The Cd−Ga (Cadmium-Gallium) system

Moser, Z.; Gąsior, W.; Salawa, J.

doi:10.1007/bf02883170

Cited by 13 publications

(6 citation statements)

References 7 publications

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“…Literature [6] Predicted Literature [6] Predicted Literature [6] Predicted comparable with the value of 3.0 kJ mol -1 reported by Hassam et al [18] The excess molar entropy surfaces have maxima in the zinc-gallium side and minima in the gallium-cadmium side.…”

Section: B Activity Of Cadmium and Galliumsupporting

confidence: 77%

“…[1,2] The phase diagram and thermodynamic properties of binary system gallium-cadmium related to ternary system Cd-Zn-Ga are available in the literature. [3][4][5][6][7] The enthalpies of mixing of gallium-cadmium solutions reported by Vecher et al [3] are quite comparable with those published by Kleppa [4] and Hultgren et al [5] These values of enthalpy of mixing have been used for the correct evaluation of the phase diagram. Moser et al [6] have compiled the thermodynamic properties related to the formation of gallium-cadmium solutions.…”

Section: Introductionsupporting

confidence: 70%

“…[3][4][5][6][7] The enthalpies of mixing of gallium-cadmium solutions reported by Vecher et al [3] are quite comparable with those published by Kleppa [4] and Hultgren et al [5] These values of enthalpy of mixing have been used for the correct evaluation of the phase diagram. Moser et al [6] have compiled the thermodynamic properties related to the formation of gallium-cadmium solutions. The thermodynamic properties of the gallium-cadmium liquid alloys have been very systematically investigated by Shamsuddin et al [7] in the temperature range of 723 to 851 using the electrochemical technique.…”

Section: Introductionsupporting

confidence: 70%

“…The excess molar thermodynamic properties of the Cd-Ga system at 800 K as estimated by Eq. [5] are listed in Table III and compared with those published by Shamsuddin et al [6] The excess partial molar free energy (G xs i ) and enthalpy (DH i ) plots of the three components for the binary and pseudo-binary lines of the ternary system are shown in Figures 8 and 9. The curves for zinc in the pseudo-binary lines are obtained directly from the curves in the Figures 3 and 4 by multiplying each point on the curves by (1 -x Zn ) 2 .…”

Section: B Activity Of Cadmium and Galliummentioning

confidence: 99%

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Thermodynamic Investigations of Cd-Zn-Ga Liquid Solutions

Behera

Shamsuddin

2008

Metall Mater Trans B

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Activity of zinc in liquid Cd-Zn-Ga alloys has been measured by electrochemical technique based on molten salt electrolyte galvanic cell in the temperature range 723 to 823 K along three pseudo-binary lines of Zn-(Cd y Ga 1-y ), where y = 0.75, 0.50, and 0.25. The excess molar free energy, enthalpy, and entropy were computed by the Darken's treatment of the ternary solutions using published data of the relevant binary solutions and the ternary system investigated. The excess molar free energy surface of the ternary confirms substantially what one would expect from the knowledge of the corresponding curves of the component binary systems. The excess molar free energy surfaces have the maxima in the Cd-Ga side. The extremum value of molar excess free energy was found to be 3.24 kJ/mol (x Cd = 0.5, x Zn = 0.125, and x Ga = 0.375) at 800 K. The excess molar enthalpy curves have been found to be tilted toward the Zn-Cd and Cd-Ga sides. The extremum value of excess molar enthalpy was found to be 2.58 kJ/mol (x Ga = 0.3 and x Zn = x Cd = 0.35) at 800 K. The excess molar entropy surfaces have the maxima in the Zn-Ga side and minima in the Cd-Ga side. The slope-intercept method was used to compute the partial molar quantities. The activities are computed from the partial molar excess free energy for three components at 800 K. The isoactivity surfaces of the three components are depicted by the isoactivity lines. The activities of all three components show positive deviation from the Raoult's law. The excess molar free energies of the Cd-Zn-Ga system obtained experimentally are compared with those estimated from the theoretical models.

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Section: B Activity Of Cadmium and Galliumsupporting

confidence: 77%

Section: Introductionsupporting

confidence: 70%

Section: Introductionsupporting

confidence: 70%

Section: B Activity Of Cadmium and Galliummentioning

confidence: 99%

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Thermodynamic Investigations of Cd-Zn-Ga Liquid Solutions

Behera

Shamsuddin

2008

Metall Mater Trans B

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“…9 and Table 1, it is safe to say that the Zn-rich phase is a Sn-Zn-O (SZO) phase. A relevant study 11) revealed that Sn9Zn is eutectic composed. Comparing with the data in Table 1, it can be seen that the SZO phase is composed of hypereutectic phase.…”

Section: Resultsmentioning

confidence: 99%

Electrical Current Phase Transformation of Sn–9Zn–1Ag Alloy

et al. 2005

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The current load not only easily induces the electromigration effect and thermal strain, but also destroys the effectiveness of solders. As of now, temperature and phase transformation problems caused by the high current load have still not been discussed. This study investigates the structural characteristics of the Sn-9Zn-1Ag alloy under an electrical current test and heat-treatment. The results indicate that the Ag existed mostly in Ag-Zn compounds, and the Zn concentration in the Ag-Zn compounds was higher than in the needle-like Zn-rich phase and Sn-Zn eutectic phase. The Sn-9Zn-1Ag alloy had no transformation during oil heat-treatment, while the structure underwent phase transformation under electrical current testing. After current testing, the needle-like Zn-rich phases had decomposed into finer particle-like features, the Ag-Zn compounds had grown and the Sn-Zn eutectic phases had increased, and the content of Sn-rich phase had decreased. Meanwhile, the current effect also caused the content of Sn to increase but Zn and O both decreased for the Zn-rich (SZO) phases in the relative composition.

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