Revisiting The Phase Diagram of Au – Cu Alloy at Nanoscales

Au – Cu nanoparticles are widely used as catalysts in different chemical reactions. Since knowing the phase diagram of nano-alloys is crucial for effective design nano-catalysts, there have been many efforts to predict size effect on system. However, reported results inconsistent and sometimes contradictory. In this work, a CALPHAD type thermodynamic model was applied recalculate binary alloy at sizes. The show that decreasing particle decreases liquidus solidus temperatures well congruent melting point. It also found by reduction size, composition shifts towards rich side diagram.