We are happy to share the most recent publication from Archès Lab in Atomistic understanding of physic behind the Cold Spray of Graphene-Cu nanocomposite powders: “Atomic-level insights into cold spray deposition of Cu-GNPs composite coatings”
Molecular dynamics simulations revealed that cold spray deposition of Cu GNP composites on Al substrates is governed by dual bonding through metallurgical adhesion and graphene metal adsorption. Increasing impact velocity enhances particle flattening and interfacial bonding, with full embedding observed at 1500 m/s. Graphene distribution and particle morphology strongly affect deformation and GNP retention; aggregated GNPs promote interface adsorption, while uniform or random distributions lead to asymmetric deposition. Spherical particles flatten more but form shallower craters than semispherical ones. These findings establish a mechanistic link between velocity, morphology, and GNP configuration, providing guidance for optimizing cold spray of metal graphene nanocomposites.
