Abstract
Formation process of metallic ultra fine particle (UFP) using thermal plasma has not been completely clarified yet. In present study, aggregation process of Ni, Al and Ni-Al gaseous phase have been simulated by molecular dynamics (MD) method. Functional interatomic potential for Ni-Al interaction is empirically optimized using reported experimental data of thermodynamics and elastic constant of NiAl intermetallic compound. Progress of aggregation is quantitatively analyzed and its approximative formula is suggested from viewpoint of kinetic theory of gases.
