Thermodynamic and structural properties of liquid Al–Au alloys

Abstract

The mixing properties of liquid Al–Au alloys with respect to the concentration of each constituent is determined using a method based on hard sphere system and pseudo-potential perturbation. These models were used to get relevant information on mixing properties of the Al–Au alloys like the Gibbs energy and the entropy of mixing. The concentration fluctuations, chemical short range order for the hard sphere mixture (quasi-lattice theory) and the activity are calculated to know the extent of order in the liquid alloys. The results revealed that there is a degree of ordering in liquid Al–Au alloy (hetero-coordinated).

Mixing properties of liquid Al-Au alloys

“…Surface tension (σ) of liquid Al-Au alloy has been calculated at above mentioned temperatures using physical parameters of Table 2 and Equations (8,9,10,11). The calculated values of (σ) are plotted in Figure 4 as a function of concentration of Au.…”

“…The intermetallic compounds of Al-Au alloys are profoundly used in these metallization processes [1][2][3][4]. Hence, the mixing properties of the system has been extensively investigated by several researchers [3,[5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The details of the literature related to the chronological investigations of phase structures and thermodynamic properties of the system till 2004 are presented by Li et al [3].…”

“…Later, Olajire and Musari used different theoretical models to investigate the thermodynamic and structural properties of the system [10]. Peng et al [19] experimentally measured the compositional and temperature dependence of density, temperature coefficient of density, molar volumes, selfand inter diffusion and viscosity of Al-Au liquid alloy at 1400 K. They also developed a molecular dynamics (MD) model in order to computed the above mentioned properties using the experimental results [19].…”