| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2025
|
| Presentation Title |
Fabrication of Mo-Si-B alloy through spark plasma sintering using Mo powder containing La2O3 nanoparticles uniformly dispersed via ultrasonic spray pyrolysis |
| Author(s) |
Woocheol Kim, Young-In Lee, Sung-Tag Oh, Jongmin Byun |
| On-Site Speaker (Planned) |
Jongmin Byun |
| Abstract Scope |
High-temperature materials are essential for extreme heat and pressure environments, with Ni-based superalloys commonly used in gas turbine blades. To enhance turbine efficiency and fuel economy, next-generation high-temperature materials like Mo–Si–B alloys are being developed. Mo–Si–B alloys have an excellent high-temperature mechanical properties and oxidation resistance. Recent research focuses on commercializing Mo–Si–B alloys using oxide dispersion strengthening, significantly enhancing their properties. As a result, efforts are being made to achieve uniformly dispersed oxides, with ultrasonic spray pyrolysis (USP) considered an effective method for uniformly dispersing various oxide compositions. Additionally, recent research is focusing on the spark plasma sintering (SPS) to address the challenge of decreased sinterability caused by the addition of oxides.
In this study, Mo–Si–B alloy powder with La2O3 nanoparticles was fabricated using USP and sintered using SPS. The microstructure and mechanical properties of the resulting materials were then analyzed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Powder Materials, Mechanical Properties |