About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Advancing the Frontier of Powder Materials Processing and Sintering: A MPMD/EPD Symposium in Honor of Eugene Olevsky
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| Presentation Title |
Superelasticity and resiliency in ceramic micropillars of LaNbO<sub>4</sub> |
| Author(s) |
Olivia A. Graeve |
| On-Site Speaker (Planned) |
Olivia A. Graeve |
| Abstract Scope |
Superelastic materials represent a distinct family of compounds with the ability to manifest reversible deformation in response to an applied stress. Only very few ceramics have been shown to display this response fully or partially. Here, we describe exceptional superelasticity and resiliency in LaNbO<sub>4</sub> in response to compressive stresses up to 1100 MPa without rupture. Powders were prepared by combustion synthesis, and subsequently consolidated using spark plasma sintering, from which micropillars were manufactured using the focused ion beam technique. The superior resiliency of our LaNbO<sub>4</sub> micropillars results in the lowest damping merit index ever reported for a ceramic material, approaching those found in metallic alloys and polymeric materials. This makes LaNbO<sub>4</sub> a unique addition to the germane family of smart materials for applications as long-lived actuators impacting technologically significant fields such as the automotive, energy and aerospace sectors, especially in extreme conditions where ceramics excel compared to metals and polymers. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Mechanical Properties, Phase Transformations |