TY - JOUR

T1 - A Quasi-lattice Theory for Compound Forming Molten Alloys

AU - Bhatia, A. B.

AU - Singh, R. N.

N1 - Funding Information:
t Work supported in part by the Natural Sciences and Engineering Research Council of Canada. $ Present address: Department of Physics, Bhagalpur University, Bhagalpur-812007, India.

PY - 1984/1/1

Y1 - 1984/1/1

N2 - The complex formation model of Bhatia and Hargrove (BH) to explain the thermodynamic properties of compound forming A-B alloys is reformulated using a quasi-lattice picture. The formulation is explicitly carried out to an approximation where the pseudo-ternary alloy (of A and B atoms and AμBV complexes (μ, v small integers)), envisaged in BH, is treated in the quasichemical approximation. It is advantageous over BH in two major respects: Firstly, it gives useful insight into the two approximations used in BH, since these follow from it by simply going to a lower (zeroth) approximation and setting the coordination number z of the alloy to be z = 2 and z =∞. Secondly, unlike the BH approach, it provides also an expression for the short range order parameter α1, for nearest neighbours. The effect of varying z in the formulae is examined and a brief discussion of α1 is given.

AB - The complex formation model of Bhatia and Hargrove (BH) to explain the thermodynamic properties of compound forming A-B alloys is reformulated using a quasi-lattice picture. The formulation is explicitly carried out to an approximation where the pseudo-ternary alloy (of A and B atoms and AμBV complexes (μ, v small integers)), envisaged in BH, is treated in the quasichemical approximation. It is advantageous over BH in two major respects: Firstly, it gives useful insight into the two approximations used in BH, since these follow from it by simply going to a lower (zeroth) approximation and setting the coordination number z of the alloy to be z = 2 and z =∞. Secondly, unlike the BH approach, it provides also an expression for the short range order parameter α1, for nearest neighbours. The effect of varying z in the formulae is examined and a brief discussion of α1 is given.

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U2 - 10.1080/00319108408080778

DO - 10.1080/00319108408080778

M3 - Review article

AN - SCOPUS:0021156976

SN - 0031-9104

VL - 13

SP - 177

EP - 190

JO - Physics and Chemistry of Liquids

JF - Physics and Chemistry of Liquids

IS - 3

ER -