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

Christiane Stephan-Scherb; Juho Lehmusto; Florian Falk; Oded Sobol; Bruce A. 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 A. Pint

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

5 Scopus citations

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
Journal	Corrosion Science
Volume	203
DOIs	https://doi.org/10.1016/j.corsci.2022.110236
State	Published - 15 Jul 2022
Externally published	Yes

Keywords

High-temperature corrosion
Iron
Oxidation
SEM
SIMS
Steel
Sulphidation

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

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10.1016/j.corsci.2022.110236

Cite this

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

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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 A.

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 - High-temperature corrosion

KW - Iron

KW - Oxidation

KW - SEM

KW - SIMS

KW - Steel

KW - Sulphidation

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JO - Corrosion Science

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

Abstract

Keywords

ASJC Scopus subject areas

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