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

doi:10.1016/j.corsci.2022.110236

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

Laboratory of Molecular Science and Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

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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 language	English
Article number	110236
Number of pages	13
Journal	Corrosion Science
Volume	203
DOIs	https://doi.org/10.1016/j.corsci.2022.110236
Publication status	Published - 15 Jul 2022
MoE publication type	A1 Journal article-refereed

Keywords

Steel
Iron
SIMS
SEM
High-temperature corrosion
Oxidation
Sulphidation

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10.1016/j.corsci.2022.110236

CORSCI-D-21-01943_R2Accepted author manuscript, 4.59 MBLicence: CC BY-NC-ND

https://urn.fi/URN:NBN:fi-fe2024080163156

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title = "Comprehensive insights into competitive oxidation/sulfidation reactions on binary ferritic alloys at high temperatures",

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.",

keywords = "Steel, Iron, SIMS, SEM, High-temperature corrosion, Oxidation, Sulphidation",

author = "Christiane Stephan-Scherb and Juho Lehmusto and Florian Falk and Oded Sobol and Bruce Pint",

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doi = "10.1016/j.corsci.2022.110236",

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TY - JOUR

T1 - Comprehensive insights into competitive oxidation/sulfidation reactions on binary ferritic alloys at high temperatures

AU - Stephan-Scherb, Christiane

AU - Lehmusto, Juho

AU - Falk, Florian

AU - Sobol, Oded

AU - Pint, Bruce

PY - 2022/7/15

Y1 - 2022/7/15

N2 - 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.

AB - 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.

KW - Steel

KW - Iron

KW - SIMS

KW - SEM

KW - High-temperature corrosion

KW - Oxidation

KW - Sulphidation

U2 - 10.1016/j.corsci.2022.110236

DO - 10.1016/j.corsci.2022.110236

M3 - Article

SN - 0010-938X

VL - 203

JO - Corrosion Science

JF - Corrosion Science

M1 - 110236

ER -

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

Abstract

Keywords

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