About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Corrosion, Protection and Damage Monitoring of Advanced Materials in Natural and Specific Environments
|
| Presentation Title |
Corrosion Resistance of an Fe-Al Reactive Bond in Acidic Environments |
| Author(s) |
Jamieson Brechtl, Melanie Moses-DeBusk, Yan-Ru Lin, Ercan Cakmak, Tracie Lowe, Michael J. Thompson, James Keiser, Michael S. Kesler, David Weiss, Kashif Nawaz |
| On-Site Speaker (Planned) |
Jamieson Brechtl |
| Abstract Scope |
Corrosion, which can significantly degrade the material properties of metal components, has been a longstanding issue for heat exchanger applications. One potential solution involves the use of corrosion resistant Al-Ce-Mg alloys, which have shown potential for reaction bonding with conventional alloys. This study investigated the corrosion response of Al-2Ce-6Mg (atomic percent)/stainless steel reactive bond interfaces after full immersion in nitric, sulfuric, formic, and mixed acid. Scanning electron microscope characterization indicated that in the as-cut samples, reactive bond formations occurred repeatedly throughout the length of the tube-alloy interface. Samples were then fully immersed in acidic solutions similar in composition to condensing furnace condensate for 267 hours. Elemental and microstructural characterization showed that the acidic solutions containing inorganic acids did not noticeably degrade the reactive bond structure. However, the microstructural appearance and elemental profile of the sample exposed to formic acid, a fully organic acid solution, suggested oxide formation. |