Surface segregation and concentration fluctuations at the liquid-vapor interface of molten Cu-Ni alloys

Prasad, L. C.; Singh, Ranjit

doi:10.1103/physrevb.44.13768

Cited by 80 publications

(60 citation statements)

References 13 publications

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“…It is related to dynamic and physical properties: viscosity, diffusion [37] , and surface tension. [38][39][40] The concentration fluctuation function S CC (0) is thermodynamically associated to Gibbs energy of mixing, G M ¼ G xs M þ RT P i C i lnC i ; and activity of pure components (a A and a B ). It can be expressed in the following form [17,18] :…”

Section: Surface Tensionmentioning

confidence: 99%

Bulk and Surface Properties of Liquid Al-Li and Li-Zn Alloys

Trybula

Gancarz

Gąsior

et al. 2014

Metall Mater Trans A

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Physicochemical properties like density, surface tension, and viscosity of liquid binary Al-Li and Li-Zn alloys have been measured using draining crucible method. The experimentally measured surface-tension values have been compared to theoretical results based either on the Butler model or the compound formation model assuming the existence of the most favored A 1 B 2 and A 2 B 3 clusters. Several models for viscosity calculation have been also applied and discussed in confrontation with measured data. Finally, the clustering effects in the liquid Al-Li and Li-Zn alloys have been examined using two microscopic functions, i.e., the concentration fluctuation function in the long-wavelength limit and the Warren-Cowley short-range order parameter.

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Section: Surface Tensionmentioning

confidence: 99%

Bulk and Surface Properties of Liquid Al-Li and Li-Zn Alloys

Trybula

Gancarz

Gąsior

et al. 2014

Metall Mater Trans A

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“…To study the effect of this strong heterocoordination tendency of Li-Pb liquid alloy on its surface properties, we employ the expressions due to Prasad and Singh [14] given in equations (12) and (13). These expressions help us to determine surface properties when the activity coefficients of the liquid alloy components are not used in the calculations.…”

Section: Resultsmentioning

confidence: 99%

“…γ A and γ B are the bulk activity coefficients of the alloy components, w is the interchange energy, p and q are known as the surface coordination fractions. The expressions for the surface tension without the activity coefficients of the alloy components was obtained by Prasad and Singh [14] and are given as…”

Section: Theoretical Modelsmentioning

confidence: 99%

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Influence of strong heterocoordination on surface properties of Li–Pb melts

Anusionwu

Adebayo

Orji

2005

Physics and Chemistry of Liquids

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The influence of the strong heterocoordination tendency of the Li-Pb liquid alloy on its surface properties has been studied using a statistical thermodynamic model based on compound formation and that based on the layered structure near the interface. In addition to the already proposed saltlike structure Li 4 P b compound formed in the liquid alloy, the study shows that the compound Li 3 P b also has a profound influence on the thermodynamic properties of the liquid alloy. The surface study suggests that the formed compounds in the liquid alloy segregates to the surface about 0.8 atomic fraction of Li. The calculated surface tension of the liquid alloy exhibits a pronounced hump above equiatomic composition.2

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“…In the statistical formulation of Prasad et al [30,31] binary liquid alloy is considered to have a layered structure near the surface with thermodynamic equilibrium existing between the species at the surface and in the bulk. The surface properties of liquid alloys are influenced by their bulk thermodynamic properties.…”

Section: Surface Propertiesmentioning

confidence: 99%