About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
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| Symposium
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Additive Manufacturing of Thick Films Using Dry Aerosol Processes: Process Development, Materials, Process Optimization and Applications
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| Presentation Title |
Development of Variable Composition Aerosol Deposition Coatings |
| Author(s) |
Shannon Murray, Jacob Williamson, Seth Davis, Stephen Bierschenk, Desiderio Kovar |
| On-Site Speaker (Planned) |
Shannon Murray |
| Abstract Scope |
Aerosol deposition (AD) is a room temperature kinetic spray process that has been used to produce metallic, ceramic, polymeric, and blended coatings on a variety of substrates. Films are produced through the impact consolidation of particles accelerated through a converging-diverging nozzle into a vacuum chamber. As a room temperature deposition technique, AD offers the ability to blend disparate materials such as ceramics and polymers. By feeding two powders individually and varying the federate throughout the run, variable composition coatings that transition from one material to another through the thickness of the coating can be produced using a single nozzle. But producing a variable composition blended coating requires substantial powder processing and spray parameter development. This work studies the effect of the individual material characteristics (e.g., powder size, deposition efficiency) on the resulting variable composition Cu/Ta, Cu/B4C, and Ta/Al2O3 exemplar coatings as a means to expedite process development of future blends. |