About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ceramics and Ceramic-Based Composites for Nuclear Applications III
|
| Presentation Title |
Improved Radiation Shielding in SPS-Processed B4C Ceramics via High-Entropy Alloy Additions |
| Author(s) |
Gultekin Goller, Burak Cagri Ocak |
| On-Site Speaker (Planned) |
Gultekin Goller |
| Abstract Scope |
Boron carbide (B4C) stands out among structural ceramics for its high hardness, low density, and chemical stability, making it ideal for lightweight armor and nuclear shielding. However, its densification and low fracture toughness remain major challenges. In this study, equiatomic FeNiCoCrMo high-entropy alloy (HEA) was added (2 vol.%) as a sintering aid to B4C, and the mixture was consolidated via spark plasma sintering (SPS). The microstructure, phase composition, and mechanical properties were characterized. Neutron shielding performance was evaluated using neutron transmission experiments at the ITU TRIGA Mark-II reactor with a Pu-Be source. Complementary Monte Carlo simulations (Geant4) were performed based on experimental densities and geometries. Results show that HEA addition improved densification, mechanical strength, and neutron attenuation capacity. This work highlights the potential of combining HEA additions with advanced sintering and simulation methods to optimize the performance of B4C-based shielding ceramics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, High-Entropy Alloys, |