Thermodynamic modeling of Ag – Cu nanoalloy phase diagram

Abstract Ag – Cu nanoparticles has been attracted a considerable attention due to their potential to use as catalysts, sensors and nano – solders. It is well known that the alloy nanoparticles have different phase stabilities than those observed in the bulk systems. Previous calculated results on phase stability of Ag – Cu nanoparticles showed relatively large differences with reported experimental data. Using recently modified CALPHAD type thermodynamic model, we reassess the phase diagram of Ag – Cu nanoalloy. Effect of particle size has been discussed. The results compared with the experimental and calculated data from the literature. In comparison with previous calculated phase diagrams, calculated phase diagram in this work shows better agreements with the experimental data.