About this Abstract |
| Meeting |
TMS Specialty Congress 2026
|
| Symposium
|
Energy Materials 2026
|
| Presentation Title |
Effect of Microstructural Control and Ultra-High Temperature Treatment on the Properties of ZrC Coating in TRISO Particles |
| Author(s) |
Jinxiang Hu, Bowen Li, Zebing Liu, Xu Yang, Malin Liu, Bing Liu, Rongzheng Liu, Yaping Tang |
| On-Site Speaker (Planned) |
Jinxiang Hu |
| Abstract Scope |
Very-high-temperature gas-cooled reactors (VHTRs) operate with coolant outlet temperatures exceeding 1223K, which requires the reactor core to bare potentially higher temperatures. Zirconium carbide (ZrC), with remarkably elevated melting point and chemical stability at elevated temperatures, has been identified as a promising candidate for use as an effective fission product barrier layer. Consequently, further investigation is required into the microstructural regulation of ZrC coatings and their structural stability under ultra-high temperature conditions. This study employed the fluidized bed chemical vapor deposition (FB-CVD) method to prepare ZrC coatings in the ZrCl4-C3H6-H2-Ar system. By controlling the feed rate of ZrCl4 powder and the gas flow rate of C3H6, ZrC coatings with different stoichiometric ratios can be obtained. The coated particles were treated at ultra-high temperatures for 1 hour in an argon atmosphere at 2773~3073K. The effect of stoichiometric ratios layers on the properties of ZrC under ultra-high temperatures was discussed. |
| Proceedings Inclusion? |
Undecided |