Minor element effect on high temperature corrosion of a low-alloyed steel: Insight into alkali- and chlorine induced corrosion by means of atom probe tomography
Persdotter, A.; Boll, T.
1,2; Jonsson, T.
1 Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Karlsruher Institut für Technologie (KIT)
2 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)
1,2; Jonsson, T.1 Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Karlsruher Institut für Technologie (KIT)
2 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)
Abstract:
High temperature corrosion remains a challenge for many high temperature applications. The corrosion resistance may be improved by the addition of minor amounts of reactive alloying elements. However, in the presence of corrosive species, such as alkali and chlorine, the corrosion rates are often highly accelerated. This study implements STEM/EDX and APT in order to shed light on a possible destructive minor element effect by investigating how the presence of minor amounts of corrosive species in the iron oxide formed on a low-alloyed steel may impair the corrosion resistance by increasing the oxide growth rate and possibly also reduce the oxide integrity.
Graphical Abstract
High temperature corrosion remains a challenge for many high temperature applications. The corrosion resistance may be improved by the addition of minor amounts of reactive alloying elements. However, in the presence of corrosive species, such as alkali and chlorine, the corrosion rates are often highly accelerated. This study implements STEM/EDX and APT in order to shed light on a parallel minor element effect by investigating how the presence of minor amounts of corrosive species in the iron oxide formed on a low-alloyed steel may impair the corrosion resistance by increasing the oxide growth rate and possibly also reduce the oxide integrity.
Graphical Abstract
High temperature corrosion remains a challenge for many high temperature applications. The corrosion resistance may be improved by the addition of minor amounts of reactive alloying elements. However, in the presence of corrosive species, such as alkali and chlorine, the corrosion rates are often highly accelerated. This study implements STEM/EDX and APT in order to shed light on a parallel minor element effect by investigating how the presence of minor amounts of corrosive species in the iron oxide formed on a low-alloyed steel may impair the corrosion resistance by increasing the oxide growth rate and possibly also reduce the oxide integrity.
| Zugehörige Institution(en) am KIT | Karlsruhe Nano Micro Facility (KNMF) Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsjahr | 2021 |
| Sprache | Englisch |
| Identifikator | ISSN: 0010-938X, 1879-0496 KITopen-ID: 1000138657 |
| HGF-Programm | 38.04.01 (POF IV, LK 01) Gas turbines |
| Weitere HGF-Programme | 43.35.03 (POF IV, LK 01) Structural and Functional Behavior of Solid State Systems |
| Erschienen in | Corrosion Science |
| Verlag | Elsevier |
| Band | 192 |
| Seiten | Art.-Nr.: 109779 |
| Schlagwörter | High temperature corrosion; Low-alloy steel; ChlorineAlkali; Transmission electron microscopy; Atom probe tomography, knmf proposalID 2020-023-028477 APT FIB |
| Nachgewiesen in | Scopus Dimensions Web of Science |