| About this Abstract |
| Meeting |
3rd World Congress on High Entropy Alloys (HEA 2023)
|
| Symposium
|
HEA 2023
|
| Presentation Title |
Electrochemical Technique to Characterize the High Temperature Oxidation Behavior of Materials |
| Author(s) |
Koen JH Verrijt, David Poerschke |
| On-Site Speaker (Planned) |
Koen JH Verrijt |
| Abstract Scope |
Oxidation limits the lifetime of many materials in high temperature applications. Developing more durable materials requires detailed understanding of the oxidation reactions and rates. Some commonly used analytical techniques, such as thermogravimetric analysis, measure the net mass change of the specimen over time. Other techniques, such as cross-sectional analysis of oxidized specimens, provide insight into the oxide scale microstructure. However, the information obtained with these techniques is insufficient to understand complex oxidation phenomena. This work presents an analytical technique that utilizes solid-state electrochemical oxygen pumps to control the oxidation potential and measure the resulting oxygen consumption of a material. This approach, which provides specific advantages when studying multi-principal element alloys (MPEA) that form a mixture of condensed and gaseous oxides, was applied to study the effect of aluminum on the oxidation resistance of refractory MPEAs and better account for reactions resulting in simultaneous mass gain and loss for molybdenum-containing specimens. |
| Proceedings Inclusion? |
Planned: Metallurgical and Materials Transactions |