| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Freeze Casting of LaNbO<sub>4</sub> Shape Memory Ceramics |
| Author(s) |
Cesar I. Martinez-Cruz, Olivia A. Graeve |
| On-Site Speaker (Planned) |
Cesar I. Martinez-Cruz |
| Abstract Scope |
The shape memory effect allows a deformed material to recover an original shape upon the application of an external agent such as heat, with applications in the medical and aerospace industries, among others. Very few ceramics, including CeO<sub>2</sub>-ZrO<sub>2</sub> and LaNbO<sub>4</sub>, in the form of micropillars or microspheres exhibit this effect. To expand the use of shape memory ceramics, researchers have scaled up sample size by producing porous structures. This approach reduces the number of surrounding grains on a particular volume of material, minimizing constraints during compression and preventing fracture. The freeze casting technique can create porous scaffolds made of thin ceramic lamellar walls, emulating single crystal structures, and optimizing the load distribution during compression. Therefore, in this study freeze casting was used to produce porous bulk scaffolds (3 mm samples) of LaNbO<sub>4</sub> to achieve larger compression loads. Subsequently, the relevant tetragonal to monoclinic transformation was explored in the scaffolds. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Mechanical Properties, Powder Materials |