ON THE REGULARITIES OF FORMATION OF MONO- AND BIMETALLIC NANOPARTICLES IN THE COALESCENCE PROCESS
The simulation was carried out using two alternative Monte Carlo and molecular dynamics methods of the coalescence process with gradual thermal action for metallic nanoparticles based on nickel, aluminum, copper, silver and gold. The following types of mono- and bimetallic systems were considered: in the form of a sphere and in the form of two perpendicular blocks. It is established that the evolution of the coalescence process for monometallic nanoparticles differs significantly from that for bimetallic nanoparticles. Characteristics such as the coalescence temperature, the structure and shape of the neck, the dihedral angle between the nanoparticles can differ significantly. It is argued that it is impossible to accurately predict the behavior of a bimetallic system in the process of coalescence, knowing the evolution of the process of coalescence for monometallic systems consisting of the same metals.