Thermodynamics and surface properties of liquid Al–Ga and Al–Ge alloys

Anusionwu, B. C.; Adebayo, G.A.; Madu, C. A.

doi:10.1007/s00339-009-5428-3

Cited by 17 publications

(3 citation statements)

References 20 publications

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“…Since the past few decades, Al, Ga and their alloys of very high purity have begun to play a pivotal role as materials for wide industrial use [1][2][3][4][5][6]. Straumal et al studied the grain growth in high purity Al-Ga alloys at various Ga-concentrations.…”

Section: Introductionmentioning

confidence: 99%

Electrical Transport and Electronic Structure Calculation of Al-Ga Binary Alloys

Kumar¹,

Ojha²

2011

Acta Phys. Pol. A

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The Harrison first principle pseudopotential technique based on the concept of orthogonalized plane waves has been used to study the liquid electrical resistivity and other physical properties viz., Knight shift, Fermi energy and electronic density of states of liquid binary alloys of simple metals. We have also performed a first-principles calculation of the electronic band structure of Al-Ga binary alloy at equiatomic composition employing the full-potential linearized augmented plane wave method. Total energy minimization enables us to estimate the equilibrium volume, bulk modulus and its pressure derivative. We have also described the total density of states and the partial density of states around the Fermi energy.

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Section: Introductionmentioning

confidence: 99%

Electrical Transport and Electronic Structure Calculation of Al-Ga Binary Alloys

Kumar¹,

Ojha²

2011

Acta Phys. Pol. A

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“…Al-Ge alloys have been of interest in fundamental studies of nucleation in solid [5,6] and in principle of precipitation reactions. The primary application of Al-Fe alloys is electrical distribution in the buildings with potential in automobiles, aerospace, telephone lines magnet winding [7][8][9]. Therefore theoretical investigation giving mixing properties of both alloys are highly desirable for the material preparation of the metal alloys.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and structural investigations on mixing behavior of hetero-coordinated Al-based alloys in the fusion state

2015

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We have used simple statistical model to report the hetero-coordination of two Al-based liquid alloys, i.e. Al-Ge and Al-Fe at temperatures 2000K and 1873K respectively. Through thermodynamic functions such as free energy of mixing and ratio of activity of the component atoms of the alloys, we have reported the information on the interaction, stability and bonding strength among the constituent atoms in the alloys. At the microscopic level, concentration fluctuation in the long wavelength limit and Warren-Cowely short range order parameter help to obtain the microscopic information on structure of molten alloys. Our theoretical analysis is based on interchange or ordering energy parameter which is found to be negative and temperature dependent. Negative deviation from Raoultian behaviour is observed in the computed thermodynamic and structural parameters of the alloys. The computed results are in good agreement with experimental data. The analysis concluded that both alloys are of weakly interacting and chemically ordered system. ©RCOST: All rights reserved.

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“…In this study, we have calculated electrical resistivities using the modified Ziman formula suggested by Ferraz-March for Al 1−x Ga x liquid metal alloys at 973 K. We have selected Al-Ga alloys in this study because Al, Ga, and their alloys play pivotal roles as materials for wide industrial use [4][5][6][7][8][9], and their structural and transport properties have been recently investigated theoretically at the same temperatures [10]. To describe interionic interactions, we have used the individual version of the local pseudopotential proposed by Fiolhais et al [11,12] which was developed for the solid state in requiring the main electronic features to be correctly predicted, and could be transferable to other environments as tested for liquid binary metal alloys [13][14][15][16][17][18][19].…”

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confidence: 99%

Structure and Electrical Resistivities of Liquid Al and Ga Metals and Their Binary Alloys

Korkmaz

2012

Int J Thermophys

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The ionic and electronic properties of liquid Al and Ga metals and Al 1−x Ga x alloys have been investigated self-consistently. Partial structure factors have been calculated from the solution of the Ornstein-Zernike equation with the hybridized mean spherical approximation closure, and the transferable electron-ion potential of Fiolhais et al. has been used as the input pseudopotential. Two different formulas are used in the electrical resistivity calculation, namely, the Faber-Ziman formula and the modified Ziman's formula suggested by Ferraz-March. The results are compared with each other and experimental values.

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Thermodynamics and surface properties of liquid Al–Ga and Al–Ge alloys

Cited by 17 publications

References 20 publications

Electrical Transport and Electronic Structure Calculation of Al-Ga Binary Alloys

Electrical Transport and Electronic Structure Calculation of Al-Ga Binary Alloys

Thermodynamic and structural investigations on mixing behavior of hetero-coordinated Al-based alloys in the fusion state

Structure and Electrical Resistivities of Liquid Al and Ga Metals and Their Binary Alloys

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