CORRELATION BETWEEN BULK AND SURFACE-PROPERTIES OF AGSN LIQUID ALLOYS

The energetics and its effect on the alloying behavior of AgSn liquid alloys have been theoretically investigated with the clear aim to corr elate bulk phenomenon with surface as well as physical properties. The grand partition function for the bulk and the surface have been solve d in the framework of compound formation model with the application of quasi-lattice approximations to obtain analytical expressions for var ious thermodynamic, structural, physical, and surface parameters. An a ttempt has also been made to link surface phenomena with the bulk thro ugh surface tension and concentration fluctuations in the long-wavelen gth limit (S-cc(O)). The little explored area of viscosity and diffusi on has also been discussed in the light of compound formation model. O ur study reveals that the surface is quite enriched with Sn atoms at a ll bulk compositions.