| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Investigation of Protective Potential of Al & Cr in Intermediate Temperature Oxidation of MoNbTaW Thin Film |
| Author(s) |
Md Imran Noor, Zahidur Rahman, Paul F. Rottmann |
| On-Site Speaker (Planned) |
Md Imran Noor |
| Abstract Scope |
Multi-principal element alloys (MPEAs) show promise for extreme environments, but their complex atomic interactions make behavior prediction challenging. Understanding MPEA performance requires studying the formation and evolution of their protective oxide layers. While equiatomic CrMoNbTaW demonstrates excellent oxidation resistance up to 1300℃ due to a protective CrTaO4 layer, the initial oxidation stages and elemental interactions remain poorly understood. This research addresses this knowledge gap by investigating equiatomic CrMoNbTaW thin films with an aluminum capping layer, fabricated via magnetron sputtering. The films were examined before and after exposure to temperatures between 300℃ and 500℃ for 10 hours. Comprehensive characterization techniques, including XRD, EDS, XPS, nanoindentation, and SEM, were employed to analyze structure, composition, mechanical properties, and microstructure. This multifaceted approach aims to understand the oxidation mechanism and evaluate the protective potential of Al and Cr for MoNbTaW films, contributing to a mechanistic understanding of initial oxide formation of MPEAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Thin Films and Interfaces, Environmental Effects |