Comprehensive insights into competitive oxidation/sulfidation reactions on binary ferritic alloys at high temperatures

Christiane Stephan-Scherb*, Juho Lehmusto, Florian Falk, Oded Sobol, Bruce Pint

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

Interpreting high-temperature corrosion induced by mixed-gas atmospheres is challenging due to the different contributions of oxidizing gases. Here, a comprehensive study on the combined oxidation/sulfidation using label molecules is presented. Fe-Cr model alloys with 2 wt% and 9 wt% Cr were isothermally exposed using a volumetric mixture of 0.5%S16O2/27%H218O and 0.5%S16O2/7%H218O at 650 °C for 5 h and then characterized by secondary ion mass spectroscopy (SIMS). Additionally, the reactions were followed in-situ utilizing energy dispersive X-ray diffraction. The study showed that both S16O2 and H218O contribute to the oxidation of the alloys but to different extents depending on the Cr-content.
Original languageEnglish
Article number110236
Number of pages13
JournalCorrosion Science
Volume203
DOIs
Publication statusPublished - 15 Jul 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • Steel
  • Iron
  • SIMS
  • SEM
  • High-temperature corrosion
  • Oxidation
  • Sulphidation

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