About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Field-Assisted Material Processing and Solidification
|
| Presentation Title |
From Flash Sintering to Electric-Field Control of Microstructures |
| Author(s) |
Jian Luo |
| On-Site Speaker (Planned) |
Jian Luo |
| Abstract Scope |
In a series of mechanistic studies of flash sintering [Scripta Materialia 146:260 (2018)], we showed that flash sintering generally initiates via thermal runaway [Acta Materialia 94:87 (2015)] and further suggested that ultrahigh heating rates on the order of ~100 K/s can enable ultrafast sintering [Acta Materialia 125:465 (2017); ENGINEERING Transformative Materials 2026, https://doi.org/10.2738/ENGTM.2026.0002]. While ultrafast sintering can be achieved without electric fields, electric fields can strongly influence microstructural evolution. In particular, we discovered that applied electric fields can drive grain boundary (GB) phase-like transitions via electrochemical coupling, including a GB disorder-to-order transition that triggers abnormal grain growth in Bi₂O₃-doped ZnO [Nature Communications 12:2374 (2021)]. We further demonstrated that such field-induced GB transitions can be leveraged to create graded microstructures and tailor microstructural evolution [Materials Today 73:66 (2024) for ZnO; Journal of the European Ceramic Society 46:118104 (2026) for BaTiO₃; and Yang & Luo, unpublished results for SrTiO₃]. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Process Technology, Characterization, Ceramics |