About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Advances in Surface Engineering
|
| Presentation Title |
Exploring the Particle-substrate Interface in Cold Spray Applications via Single Particle Impacts |
| Author(s) |
Veera Panova, Christopher Schuh |
| On-Site Speaker (Planned) |
Veera Panova |
| Abstract Scope |
In cold spray additive manufacturing, powder particles are accelerated to supersonic velocities to plastically deform and bond upon impacting a substrate. Fundamental understanding of metallic bonding at the substrate-particle interface is crucial for evaluating engineering performance of the fabricated parts. The laser-induced particle impact test (LIPIT), a compact optical setup, allows us to deconstruct this complex process and focus on single particle impacts. Such single-particle experiments generally reveal poor bonding at the particle-substrate interface, yet cold-sprayed coatings appear to be well-adhered. This work addresses this discrepancy by exploring experimental variables that may influence bond development, using advanced microscopy techniques and LIPIT for copper-on-copper impacts. In support of this goal, we develop new quantitative assessments for the fraction of area that is bonded and then explore how process conditions affect the bonded area. |