| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Silicon Oxycarbide Coatings on Zirconia Microspheres Using a Fluidized Bed Coating Process |
| Author(s) |
Kathy Lu, Sanjay Singh |
| On-Site Speaker (Planned) |
Kathy Lu |
| Abstract Scope |
In this study, YSZ microspheres were successfully coated with a polymer derived ceramic to a thickness of ~110 µm using a fluidized bed coating process. The influence of the coating parameters, such as coating solution rheology and temperature, on the coating process was investigated and the underlining coating mechanisms were elucidated. Simulations provided gas and particle velocity distribution data that cannot be measured experimentally. During pyrolysis, depolymerization and hydrocarbon loss occurred between 400-600 °C. The SiOC coating shrank significantly during pyrolysis with a final thickness of 40-55 µm. The phase separation of the coating layer led to the formation of SiOC, SiO2, SiC, and graphite. This work provides a promising method of creating more irradiation resistant nuclear fuel coatings. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Powder Materials, Surface Modification and Coatings |