About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Thick Films Using Dry Aerosol Processes: Process Development, Materials, Process Optimization and Applications
|
| Presentation Title |
Micro-Cold Spray of Zinc Oxide Nanoparticle Aggregates with Different Fractal Dimensions |
| Author(s) |
Scott Burlison, Michael Becker, Desiderio Kovar |
| On-Site Speaker (Planned) |
Scott Burlison |
| Abstract Scope |
The micro-cold spray (MCS) process utilizes the high velocity impact of ceramic nanoparticles to deposit thick films at room temperature. Previous computational studies have focused only on the deposition of single particles. A more realistic scenario for ceramics is that the powders are agglomerated or aggregated. In this study, molecular dynamics (MD) simulations were performed in the LAMMPS software package to study the impact behavior of partially-sintered zinc oxide (ZnO) multi-nanoparticle (NP) aggregates onto a ZnO substrate. The degree to which the aggregates were compacted was varied by changing the number of NPs and the aggregate structure. Each aggregate impact was studied in OVITO to determine the effect of aggregate compactness on deposition behavior and film formation. |