Molecular Dynamics Simulation of Au Nano--Scale Particle Deposited on Au Surface During Cold Spraying
冷喷涂Au纳米粒子在金属表面沉积过程的分子动力学模拟

By using molecular dynamics simulation, the deposition process of cold spraying nano-scale Au particles on Au (001) surface and the morphological changes of the surface layers of the substrate and the particle are described, in which the many-body potential was used to calculate the interatomic force between the atoms. Calculation of the temperatures showed that the melt phenomenon occured on the local area of the substrate during impact and deposition. The influence factors on deposition process, such as incident velocity and the size of the particles, were discussed through calculating the number of atoms penetrating into the substrate and the contact area between the particle and the substrate.