Abstract
Microstructure evolution in bulk hafnium diboride ceramics prepared by spark plasma sintering in flash regime was compared with conventional spark plasma sintering. The conventional and flash spark plasma sintering resulted in ceramics with a high relative density exceeding 96% of their theoretical density. A remarkably fine grain size distribution was noticed for the specimen prepared in the flash regime. This atypical microstructure evolution provides a possible insight into the mechanism of flash sintering for conductive bulks. The room temperature flexural strength of the hafnium diboride processed by flash SPS was 650 MPa which is 140 MPa higher than the sample produced by conventional SPS.
| Original language | English |
|---|---|
| Pages (from-to) | 898-906 |
| Number of pages | 9 |
| Journal | Journal of the European Ceramic Society |
| Volume | 39 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2019 Apr 1 |
| Externally published | Yes |
Keywords
- Flash sintering
- Flexural strength
- Hafnium diboride
- High temperature materials
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
Fingerprint Dive into the research topics of 'Microstructure and flexural strength of hafnium diboride via flash and conventional spark plasma sintering'. Together they form a unique fingerprint.
Cite this
Demirskyi, D., Suzuki, T., Grasso, S., & Vasylkiv, O. (2019). Microstructure and flexural strength of hafnium diboride via flash and conventional spark plasma sintering. Journal of the European Ceramic Society, 39(4), 898-906. https://doi.org/10.1016/j.jeurceramsoc.2018.12.012