Chemical Ordering in Na-Pb and Na-Hg Binary Liquid Alloys

A simple model has been used to investigate the nature of chemical order in Na-Pb and Na-Hg liquid binary alloy at 700K and 673K respectively. The energy parameter obtained from the model was used to calculate the concentration dependent mixing properties such as Gibb’s free energy of mixing, Concentration fluctuations in the long wavelength limit and the Warren-Cowley chemical short range order parameter. Results obtained showed that both alloys are hetero-coordinated throughout the entire concentration and there is tendency for segregation and demixing to take place in the liquid alloys. We observed that Na-Hg liquid alloy is more strongly interacting binary alloy and chemically ordered than Na-Pb liquid alloy.

Electrical Resistivity of Ni-Cr Liquid Binary Alloy

Present paper dealswith the calculation of electrical resistivity (ρ) of Ni-Cr liquid binary alloy using Faber-Ziman formulation. Todescribe electron-ion interaction we have used newly constructed parametricfree model potential along with Ashcroft-Langreth (AL) partial structurefactor. To see the influence of exchangeand correlation effect, Hartree, Taylor and Sarkaret allocal field correlation functions are used. From presentresults, it is seen that good agreements between present results andexperimental data have been achieved. Lastly we conclude that our model potential successfully produces thedata of electrical resistivity (ρ) ofNi-Cr liquid binary alloy.

Concentration Depended Thermodynamic Properties of Fe-Co Liquid Binary Alloy

The thermodynamic properties like heat of mixing (ΔE), entropy of mixing (ΔS) and volume of mixing (ΔΩ) of Fe-Co liquid binary alloys are computed using our newly constructed parameter free model potential. We have also attempted to investigate the effect of various forms of exchange and correlation functions, namely, Hartree (H) and Taylor (T) on the thermodynamic properties of Fe-Co liquid binary alloys. It is found that the proper choice of the model potential along with the local field correction function play an important role in investigating the thermodynamic properties of Fe-Co liquid binary alloys.

Theoretical Investigation of Electrical Transport Property of Co-Cr Liquid Binary Alloy

Electronic transport property like electrical resistivity (ρ) of Co-Cr liquid binary alloy is calculated using Faber-Ziman formulation. To describe electron-ion interaction we have used newly constructed parametric free model potential along with Ashcroft-Langreth (AL) partial structure factor. To see the effect of exchange and correlation effect on electrical resistivity, we have used different local field correction functions like Hartree, Taylor and Sarkar et al. From present results, it is seen that good agreements between present results and experimental data have been achieved. Lastly we conclude that our model potential successfully produces the data of electrical resistivity (ρ) of Co-Cr liquid binary alloy.