N. Panthi; I. B. Bhandari; I.S. Jha; I. Koirala
Abstract
Thermodynamic and structural properties of compound forming binary liquid copper tin alloy at 1400K have been well analyzed as a function of concentration by considering Cu3Sn complex by using Quasi lattice model. The mixing behavior of the alloy is studied in detailed by giving more emphasis on the ...
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Thermodynamic and structural properties of compound forming binary liquid copper tin alloy at 1400K have been well analyzed as a function of concentration by considering Cu3Sn complex by using Quasi lattice model. The mixing behavior of the alloy is studied in detailed by giving more emphasis on the interaction energy parameters between neighboring atoms of the alloy. The study provides the information of moderately interacting as well as ordering nature on the entire range of concentration of the liquid alloy. Similarly transport and surface properties (viscosity surface tension) of the liquid have also been studied under statistical models; Budai-Banko-Kaptay model and Butler's approach. The computed theoretical thermodynamic data of 1400K are in good agreement with the corresponding experimental data. The viscosities and surface tension of the alloys computed predicts noticeable negative derivation from ideal case and these increase with increase in copper atoms in the alloy.
A. Kumar; I.S. Jha; B.P. Singh
Abstract
The quasi-lattice model based on pairwise interactions has been used to study the large deviation from the ideal mixture and the concentration dependent asymmetry in the thermodynamic properties of Mg-Bi liquid alloy. This has been utilised to extract microscopic information such as concentration-concentration ...
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The quasi-lattice model based on pairwise interactions has been used to study the large deviation from the ideal mixture and the concentration dependent asymmetry in the thermodynamic properties of Mg-Bi liquid alloy. This has been utilised to extract microscopic information such as concentration-concentration structure factor in long wavelength limit [Scc(o)] and warren-cowley short range order parameter a1 of Mg-Bi liquid alloy at 975K. The analysis suggests that heterocoordination leading to the formation of complex Mg3Bi2 is likely to exist in the melt, and is of strongly interacting nature. The theoretical analysis reveals that the pairwise interaction energies between the species depend considerably on temperature and the alloy is chemically more ordered in Mg-rich region of the phase diagram. The alloy behaves like a segregating system in Bi-rich region.