THE INFLUENCE OF SURFACE AND INTERPHASE CHARACTERISTICS ON THE BEHAVIOR OF THE PHASE DIAGRAM OF NANOPARTICLES OF THE PALADIUM-PLATINUM ALLOY

Abstract

The melting and crystallization temperatures have been calculated and the phase diagram of Pd — Pt metal particles of 10 nm in size has been constructed. The surface and interfacial energies, their temperature and size dependences were estimated by a modified electron-statistical method. It was found that the form of the phase diagram for Pd — Pt nanoparticles has significant differences from the diagram of bulk phases, including the melting-crystallization hysteresis.

Keywords

• size effects
• melting temperature
• crystallization temperature
• phase diagram
• melting-crystallization hysteresis
• binary nanoparticles
• palladium-platinum system