| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
From Ultrafast Sintering with and without Electric Fields to Electrochemically Controlled Microstructural Evolution |
| Author(s) |
Jian Luo |
| On-Site Speaker (Planned) |
Jian Luo |
| Abstract Scope |
This talk will first review our recent studies on understanding the scientific questions and technological opportunities of flash sintering [Scripta 146: 260 (2018); MRS Bulletin 46: 26 (2021)]. We originally proposed that flash sintering generally starts a thermal runaway [Acta 94:87 (2015)], but it can also be activated by bulk phase and grain boundary complexion transitions [Acta 181:544 (2019)]. We further proved that ultrafast densification is enabled by ultrahigh heating rates of ~100 K/s [Acta 125:465 (2017)]. Subsequently, a generic ultrafast high-temperature sintering was reported in a collaborative study [Science 368:521 (2020)]. Other related technologies include water-assisted flash sintering (WAFS) to “flash” ZnO at room temperature [Scripta 142:79 (2018)] and two-step flash sintering (TSFS) to densify ceramics with suppressed grain growth [Scripta 141:6 (2017)]. Recent and on-going research discovered electrochemically induced grain boundary transitions [Nature Communications 12:2374 (2021)]] and is further investigating electrochemically controlled microstructural evolution occurring via several mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, Ceramics, Powder Materials |