About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
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Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
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| Presentation Title |
Synergistic Design of Structural and Functional Nanocomposites Via pALD and EC-PAS |
| Author(s) |
Kevin P. Anderson, Benjamin Greenberg, Zoey Warecki, Marc Currie, Joseph Prestigiacomo, Daniel Pennachio, Alan Jacobs, Austin Cendejas, Eric Patterson, James Wollmershauser, Boris Feigelson |
| On-Site Speaker (Planned) |
Kevin P. Anderson |
| Abstract Scope |
Composites embody the pursuit of synergy, combining constituent strengths to overcome individual shortcomings. This work highlights a versatile approach to synthesizing uniform, nanoscale core-shell composites for diverse structural and functional applications. Using particle atomic layer deposition (pALD), we achieve precise nanostructural control of multi-component powders. Complete densification with negligible grain growth is achieved via Environmentally Controlled – Pressure Assisted Sintering (EC-PAS), utilizing pristine nanoparticle surfaces, elevated pressure (<2 GPa), and low temperature (<0.5 T<sub>m</sub>). Case studies demonstrating this processing technology across several material systems will be discussed including structural enhancements in Y<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> ceramics such as zirconia-toughened alumina achieving simultaneous high hardness (17 GPa) and toughness (10 MPa√m) through size-dependent phenomena. Furthermore, we demonstrate the platform’s functional versatility, highlighting tunable SiO<sub>2</sub>/ZnO:Al solids and advanced thermoelectrics. Ultimately, this framework enables unparalleled nanoscale architectural control to explicitly tailor macroscopic mechanical, thermal, and electrical properties. |