About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Feedstock Processing for Multifunctional Materials
|
| Presentation Title |
Fabrication of Bulk Strontium Titanate by Laser Powder Bed Fusion |
| Author(s) |
Rachel Mcnamara, Ji Ma |
| On-Site Speaker (Planned) |
Rachel Mcnamara |
| Abstract Scope |
Strontium titanate (SrTiO3) is a multifunctional ceramic with the perovskite structure. SrTiO3 is semiconductor that exhibits thermoelectricity and piezoelectricity. Additionally, SrTiO3 is one of the few ceramics that exhibits room-temperature ductility. This ductility is observed in single crystals provided there is sufficient dislocation density and available slip systems. Single-crystal SrTiO3 can provide the available slip systems, but the dislocation density must be high enough to distribute stress. This study probed the feasibility of producing bulk SrTiO3 by laser powder bed fusion (LPBF), which can enable enhanced plasticity by quenching with a high dislocation density. Additionally, the LPBF process can lead to columnar grains, which could behave similarly to single crystals along the build direction. The impact of LPBF on the lattice parameter, microstructure, and composition were characterized and compared with SrTiO3 made by conventional means. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Additive Manufacturing, |