|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
||Micro-cold Spray: Influence of SiC Nanoparticle Impact Angle on Deformation Behavior
||Derek W. Davies, Michael G Gammage, Michael F Becker, John W Keto, Desiderio Kovar
|On-Site Speaker (Planned)
||Derek W. Davies
The micro-cold spray (MCS) process produces thick films by accelerating aerosolized nanoparticles through a nozzle from near atmospheric pressure (300-760 Torr) to medium vacuum (1-3 Torr). By impacting these particles on a substrate translated orthogonal to the aerosol jet, patterned films are deposited. Compared to other particle deposition processes using high velocity impaction such as cold spray, MCS has demonstrated the unique capability of depositing high quality ceramic films at room temperature. Preliminary experiments suggested that impact angles other than normal relative to the substrate may improve deposition efficiency. We perform molecular dynamics simulations of single-nanoparticle impacts, varying the angle of impact, nanoparticle orientation, and velocity to determine the effect of these variables in combination on particle deformation. We compare these results to experimental MCS deposition of SiC, varying the average angle of impact by tilting the substrate.