Corrosion behaviors of pre-oxidized Al-containing Fe alloys in molten NaCl–KCl salts
The effect of pre-oxidation on the corrosion resistance of two Fe-based high-Al alloys, named Advanced Creep resistance Enhanced Stainless steel (ACES) and Alumina-forming Duplex Stainless Steel (ADSS), in molten NaCl–KCl salts at 750 °C for 500 h has been studied. Corrosion behavior of the alloys was evaluated through weight loss, electron microscopy, X-ray analysis, and elemental analysis. The results show that pre-oxidized ACES formed a stable aluminum oxide layer, which provided enhanced corrosion resistance. In contrast, pre-oxidized ADSS experienced significant oxide layer degradation and higher weight loss than those without pre-oxidation. This contrasting performance is attributed to the selective dissolution of alloying elements such as Cr and Mn, which influenced the integrity of the oxide scales.
Authors
- Taehoon Park
- Richard Ian Foster (ORCID: https://orcid.org/0000-0002-5807-6062)
- Wonseok Yang (ORCID: https://orcid.org/0000-0001-9716-9459)
- Changheui Jang (ORCID: https://orcid.org/0000-0002-8970-704X)
- Hyun Joon Eom
- Chaewon Kim (ORCID: https://orcid.org/0000-0001-9983-3237)
- Sungyeol Choi (ORCID: https://orcid.org/0000-0002-7164-8491)
- Wonseok Lee (ORCID: https://orcid.org/0009-0001-8785-6519)
- Sumin Kim (ORCID: https://orcid.org/0000-0003-2278-5278)
Institutions
- Seoul National University (KR)
- Korea Atomic Energy Research Institute (KR)
- Korea Advanced Institute of Science and Technology (KR)
Publication Details
- Journal
- Journal of Materials Research and Technology
- Published
- 2025-04-21
- DOI
- https://doi.org/10.1016/j.jmrt.2025.04.207
- Citations
- 2
- Primary Topic
- Molten salt chemistry and electrochemical processes
- Type
- article
- Field-Weighted Citation Impact
- 1.44