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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. ORCID iD icon 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.


Verlagsausgabe §
DOI: 10.5445/IR/1000138657
Veröffentlicht am 06.10.2021
Originalveröffentlichung
DOI: 10.1016/j.corsci.2021.109779
Scopus
Zitationen: 10
Dimensions
Zitationen: 12
Cover der Publikation
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
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