| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Manufacturing and Processing of Advanced Ceramic Materials
|
| Presentation Title |
Flash Sintering, Ultrafast Sintering without Electric Fields, and Electric Field Effects on Microstructural Evolution |
| Author(s) |
Jian Luo |
| On-Site Speaker (Planned) |
Jian Luo |
| Abstract Scope |
This talk will review our recent studies on the scientific questions and technological opportunities of flash sintering [Scripta Mater. 146: 260 (2018); MRS Bulletin 46: 26 (2021)]. A thermal runaway model has been developed to forecast the onset flash temperatures [Acta Mater. 94:87 (2015)]. The rapid heating profiles enable the ultrafast densification rates [Acta Mater. 125:465 (2017)]. A generic ultrafast high-temperature sintering was developed in a collaborative study [Science 368:521 (2020)]. A two-step flash sintering (TSFS) technology was invented to densify ceramics with suppressed grain growth [Scripta Mater. 141:6 (2017)]. Using water-assisted flash sintering (WAFS), we can start a flash at room temperature to subsequently densify a ZnO specimen to ~98% densities in 30 s [Scripta Mater. 142:79 (2018)]. Furthermore, flash sintering can also be activated by bulk phase and grain boundary complexion transformations [Acta Mater. 181:544 (2019)]. Electric field effects on microstructural evolution are discussed [see, e.g., arXiv: 2012.15862]. |