Thermodynamic assessment of the phase diagrams of the Cu-Sb and Sb-Zn systems

Liu, X. J.; Wang, C. P.; Ohnuma, Ikuo; Kainuma, Ryosuke; Ishida, K.

doi:10.1361/105497100770339608

Cited by 87 publications

(56 citation statements)

References 9 publications

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“…The activities calculated from the straight lines (Table 3) proved to be consistent with the data of Ohnuma and COST 531 data base [5,8] for Sb-Zn and Sn-Zn systems shown in Fig. 10.…”

Section: Resultssupporting

confidence: 86%

“…3-7 together with the Zn activity of binary Sn-Zn and Sb-Zn alloys [5,8] as well as Zn activity calculated based on a relation proposed by Muggianu et al [9] W i,j interaction coefficients for the binary alloys are presented in Table 2, in which X i denotes mole fractions of the components.…”

Section: Resultsmentioning

confidence: 99%

“…The optimized thermodynamic parameters of Sb-Sn and Sn-Zn binary solutions from the COST 531 data base [8] and for Sb-Zn from the data base by Ohnuma and coworkers [5] were applied in the calculations of activity. In the following stage, values of Zn activity were calculated based on relations form Table 1 and Eq 2 for temperatures 823 and 923 K and they are presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Bismuth, indium and antimony are the most popular metals among the modifiers of soldering properties of the Sn-Zn eutectic. [1][2][3][4][5] However, the main interest of numerous research teams has so far concentrated on the measurements of many technological properties neglecting at the same time unquestionably difficult thermodynamic examinations. Hence, the experimental results of activities of components for many ternary alloys including the Sb-Sn-Zn ones are scarcely found in the scientific literature.…”

Section: Introductionmentioning

confidence: 99%

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EMF Study of the Liquid Sb-Sn-Zn Alloys

Gancarz

Gąsior

2011

J. Phase Equilib. Diffus.

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The measurement of electromotive force (EMF) of concentration cells was applied to obtain zinc activity in ternary liquid Sb-Sn-Zn alloys in a Zn liq |(KCl-LiCl) eut + ZnCl 2 |(Sb-Sn-Zn) liq galvanic cell. The measurements were carried out at temperatures from 723 up to 943 K for different Zn concentrations X Zn and for five constant ratios of Sn to Sb mole fractions, which were 1/3, 1, 3, 4 and 9. It was found out, that with increasing Sn concentration in the ternary alloys, the activity of Zn grew reaching the highest values for alloys of ratio Sn/Sb = 9 out of the ternary alloys examined. The observed straight-line changes of EMF matched a EMF = A + B * T equation. The calculated coefficients served to obtain the activities and excess Gibbs free energy for selected temperatures 823 and 923 K.

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“…The activities calculated from the straight lines (Table 3) proved to be consistent with the data of Ohnuma and COST 531 data base [5,8] for Sb-Zn and Sn-Zn systems shown in Fig. 10.…”

Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

EMF Study of the Liquid Sb-Sn-Zn Alloys

Gancarz

Gąsior

2011

J. Phase Equilib. Diffus.

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“…The experimentally predicted 4 partial occupancy results in a composition of Zn 29. 9 Sb 28 , which could be explained as an average of 2.1 Zn atoms per unit cell occupying various interstitial sites. The entropy associated with this disorder will be addressed in the Phase Stability section.…”

Section: Articlementioning

confidence: 99%

Predicted Electronic and Thermodynamic Properties of a Newly Discovered Zn₈Sb₇ Phase

et al. 2011

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A new binary compound, Zn8Sb7, has recently been prepared in nanoparticulate form via solution synthesis. No such phase is known in the bulk phase diagram; instead, one would expect phase separation to the good thermoelectric semiconductors ZnSb and Zn4Sb3. Here, density functional calculations are employed to determine the free energies of formation, including effects from vibrations and configurational disorder, of the relevant phases, yielding insight into the phase stability of Zn8Sb7. Band structure calculations predict Zn8Sb7, much like ZnSb and Zn4Sb3, to be an intermetallic semiconductor with similar thermoelectric properties. If sufficient entropy or surface energy exists to stabilize the bulk material, it would be stable in a limited temperature window at high temperature.

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Solid‐State Foaming by Oxide Reduction and Expansion: Tailoring the Foamed Metal Microstructure in the Cu–CuO System with Oxide Content and Annealing Conditions

2015

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A new method of introducing porosity into solid metals was investigated using mixtures of Cu and CuO. The process involves distributing oxides through the Cu matrix (e.g., mechanical milling, as used here) and then reducing those oxides during annealing. The most distinguishing characteristic of this process is that pores develop within individual powder particles. In this study, we varied the oxide content (0-7 at% O), annealing temperature (400, 600, and 800°C), and annealing time (up to 3 h) to investigate their effect on the foamed metal microstructure. In general, we find that the amount of porosity within the powder particles (or bulk part) can be controlled by varying of oxide content and annealing parameters. The maximum porosity of 47.4% corresponds to intermediate conditions of both temperature and oxide content (600°C and %3 at% CuO, respectively). The pore size and grain size are small (<5 mm) in comparison with other solid-state foaming techniques and are not highly sensitive to the annealing parameters used in the present study. The unique mechanisms and opportunities associated with this oxide reduction and expansion process are discussed for the Cu-CuO system as well as extensions to other metal systems.

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Thermodynamic assessment of the phase diagrams of the Cu-Sb and Sb-Zn systems

Cited by 87 publications

References 9 publications

EMF Study of the Liquid Sb-Sn-Zn Alloys

EMF Study of the Liquid Sb-Sn-Zn Alloys

Predicted Electronic and Thermodynamic Properties of a Newly Discovered Zn₈Sb₇ Phase

Solid‐State Foaming by Oxide Reduction and Expansion: Tailoring the Foamed Metal Microstructure in the Cu–CuO System with Oxide Content and Annealing Conditions

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Thermodynamic assessment of the phase diagrams of the Cu-Sb and Sb-Zn systems

Cited by 87 publications

References 9 publications

EMF Study of the Liquid Sb-Sn-Zn Alloys

EMF Study of the Liquid Sb-Sn-Zn Alloys

Predicted Electronic and Thermodynamic Properties of a Newly Discovered Zn8Sb7 Phase

Solid‐State Foaming by Oxide Reduction and Expansion: Tailoring the Foamed Metal Microstructure in the Cu–CuO System with Oxide Content and Annealing Conditions

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Predicted Electronic and Thermodynamic Properties of a Newly Discovered Zn₈Sb₇ Phase