| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Simulations/Experiments Integration for Next Generation Hypersonic Materials
|
| Presentation Title |
Metal Di-boride (MB2 | M = Ti, Zr, Nb, Hf, Ta) Properties Above 3000 ˚C |
| Author(s) |
Elizabeth Sobalvarro, Fox Thorpe, Jesus Rivera, Harry Charalambous, Gabriella King, James Cahill, Wyatt Du Frane, Joshua Kuntz, Scott J. Mccormack |
| On-Site Speaker (Planned) |
Scott J. Mccormack |
| Abstract Scope |
Metal diborides (MB2 | M = Ti, Zr, Nb, Hf, Ta) are considered ultra-high temperature refractory ceramics due to their relatively low reactivity and high melting point. This work discusses high-temperature levitation methods using a conical nozzle levitator system equipped with lasers to investigate the melting points and thermal expansion of the metal di-borides. The melting point will be investigated using cooling trace experiments in conjunction with a 400W CO2 laser and a 500W Yb laser to melt the metal di-borides. The thermal expansion will be investigated by coupling the levitation system with X-ray diffraction at Argonne National Laboratories Advanced Photon Source. High-temperature X-ray diffraction data were used to calculate anisotropic coefficients of thermal expansion. The coefficients were compared amongst the five diborides (MB2 | M = Ti, Zr, Nb, Hf, Ta). It was found that the anisotropy could be related to the atomic displacement parameters of the metal cations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, |