| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Morphology Control of Doped Hafnium Carbide Powders |
| Author(s) |
Shari Estrada, Rafael Chavez, Olivia A. Graeve |
| On-Site Speaker (Planned) |
Shari Estrada |
| Abstract Scope |
Hafnium carbide (HfC) is an ultra-high temperature refractory ceramic material that possesses high melting point (3886°C), high hardness (26 GPa), high density (12.8 g/cm<sup>3</sup>), and high elastic modulus (350-510 GPa). These characteristics are suitable for extreme environments. Previous studies have shown that the particle morphology of carbides can be controlled through the addition of transition metal dopants, which leads to tiled morphology of their sintered grains. Achieving this may enhance creep resistance of doped HfC due to mechanical interlocking of its grains. In this research, we implemented a solvothermal synthesis to fabricate a series of doped powders with the addition of Ni (Hf<sub>1-<i>x</i></sub>Ni<sub><i>x</i></sub>C; <i>x</i> = 0.15, 0.20, 0.25, 0.30, 0.35) as a dopant. Resultant powders were characterized by X-ray diffraction and scanning electron microscopy to explore the effect the dopant has on the corresponding crystal structure and particle morphology. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, High-Temperature Materials, Powder Materials |