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The tamping effect is of great importance for the microstructure evolution, surface roughness, and mechanical performance of additively manufactured coatings by cold spray. A good understanding of the advantages and disadvantages of the tamping effect is therefore crucial for producing high-quality coatings, unfortunately, very few studies along this direction have been conducted. In this study, a multi-particle impact model was proposed to investigate the tamping effect on the deformation behavior and morphology of Cu particles in cold spray. It was found that the tamping effect could induce ...

Abstract In the present study, the molecular dynamics method is used to probe the aggregation phenomenon of hybrid nanoparticle within platinum microchannel with pyramidal barriers. In molecular dynamics simulations, argon atoms are described as base fluid particles and for the interaction between these atoms, we use Lennard-Jones potential, while the platinum–platinum and Al O nanoparticles interactions are simulated applying the embedded atom method force field. To analyze the achieved simulation results, some physical parameters such as potential energy, temperature, and distance of nan...