Numerical Simulation of Minimal Average Bonding Strength to Suppress Rebounding in Cold Spraying Cu/Cu: A Preliminary Study
In this work, finite element simulations were performed to investigate the competition between bonding and rebounding when a Cu particle of 25 mm in diameter impinged Cu substrate. With the help of cohesive zone model, the trend of the minimal average bonding strength to suppress rebounding (MABSSR) was predicted as a function of initial velocity under certain conditions. Result shows, MABSSR has a nonlinear trend versus initial velocity under the conditions considered. If the real trend of MABSSR is similar to that observed, a hypothesis is presented to explain the critical deposition velocity. Finally, defects in the current work are discussed. Analysis shows the defects have no influence on predicting the overall trend of MABSSR in the current work.
Journal of Thermal Spray Technology