Surface and transport properties of liquid Ag–Sn alloys and a case study of Ag–Sn eutectic solder

R. Novakovic, S. Delsante, J. Lee, G. Borzone

Research output: Contribution to journalReview articlepeer-review

8 Citations (Scopus)


This review represents the state of the art in the thermophysical properties of liquid Ag–Sn alloys highlighting the surface and wetting properties of Ag–Sn eutectic solder. It includes an atomistic approach developed within the framework of statistical mechanical theory in conjunction with a Quasi Lattice Theory that, through a rigorous mathematical formalism, provides exact relationships between the properties in terms of classical thermodynamics. The model predicted property values are substantiated by available experimental data. Based on the phase diagram evidence about the existence of ε-Ag3Sn intermetallic compound, the surface (surface tension and surface composition), transport (viscosity and diffusivity) properties and microscopic functions (concentration fluctuations in the long-wavelength limit and chemical short-range order parameter) have been studied using the Compound Formation Model in a weak interaction approximation and Quasi Chemical Approximation for regular solutions. A case study of Ag–Sn eutectic alloy is presented. Taking into account its importance for design and development of lead free solder alternatives, the literature data on the wettability and the phases formed at the interface between Ag–Sn eutectic alloy and different substrates (Cu, Ni, Au, Pd) have also been analysed.

Original languageEnglish
Pages (from-to)17108-17121
Number of pages14
JournalJournal of Materials Science: Materials in Electronics
Issue number20
Publication statusPublished - 2018 Oct 1

Bibliographical note

Publisher Copyright:
© 2018, Springer Science+Business Media, LLC, part of Springer Nature.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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