About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Direct-Writing SiC with Micro-Cold Spray: Effect of Particle Impact Velocity on Film Morphology |
Author(s) |
Derek W. Davies, Michael G Gammage, Michael F Becker, John W Keto, Desiderio Kovar |
On-Site Speaker (Planned) |
Derek W. Davies |
Abstract Scope |
Micro-cold spray produces thick films by accelerating aerosolized submicron to micon-scale particles through a nozzle from near atmospheric pressure (200-760 Torr) to medium vacuum (0.5-3 Torr). By impacting these accelerated particles on a substrate that is translated orthogonal to the aerosol jet, patterned films are deposited. As compared to cold spray, which is capable of depositing metallic or metal-matrix composite films, micro-cold spray has demonstrated the unique capability of depositing high quality ceramic films at room temperature. Deposition of SiC powder with average particle size of 500 nm is performed using a custom MCS machine equipped with a long converging-diverging nozzle. Impact velocity of the particles is varied by changing carrier gas type and upstream and downstream pressures. The resulting films are characterized by SEM imaging, EDS analysis, nano-wear testing, and adhesion testing. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |