| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Shape Memory Ceramics: Phase Stability in the System LaNbO<sub>4</sub>–V<sub>2</sub>O<sub>5</sub> |
| Author(s) |
Olivia A. Graeve, Cesar Martinez |
| 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. In LaNbO<sub>4</sub>, this effect consists of a phase transition between a monoclinic and a tetragonal structure. The geometric compatibility of the transformation is dictated by the degree of mathematical correspondence of the initial and transformed crystal geometry. Thus, a highly compatible system minimizes the internal stresses during the phase transformation. Here we tailor the lattice parameters of LaNbO<sub>4</sub> by adding small amounts of V<sub>2</sub>O<sub>5</sub> to promote a chemical substitution and produce a near perfect compatibility in the material. Furthermore, we investigate the phase stability of the LaNb<sub>1-<i>x</i></sub>V<sub><i>x</i></sub>O<sub>4</sub> system in a composition range from <i>x</i> = 0 to 15. LaNb<sub>1-<i>x</i></sub>V<sub><i>x</i></sub>O<sub>4</sub> is 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. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Phase Transformations, Powder Materials |