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

Materials Science and Technology Div

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 - Jul 15 2022

Bibliographical note

Publisher Copyright:
© 2022

Funding

This work has been carried out partly within the Academy of Finland project “Novel Approaches to Study Corrosion Mechanisms in High-temperature Industrial Processes” (Decision no. 296435). B. Pint and the tube furnace experiments were supported by the U.S. Department of Energy, Office of Fossil Energy, Crosscutting Technology Program. Christiane Stephan-Scherb acknowledges funding from the German Research Foundation (Deutsche Forschungsgemeinschaft DFG) through the project 416318834. We thank the Helmholtz-Zentrum Berlin für Materialien und Energie for the allocation of synchrotron radiation beamtime. The authors acknowledge Christoph Berthold and Frieder Lauxmann from Eberhard-Karls University Tuebingen for the µ-XRD² measurements. This work has been carried out partly within the Academy of Finland project “Novel Approaches to Study Corrosion Mechanisms in High-temperature Industrial Processes” (Decision no. 296435 ). B. Pint and the tube furnace experiments were supported by the U.S. Department of Energy , Office of Fossil Energy, Crosscutting Technology Program. Christiane Stephan-Scherb acknowledges funding from the German Research Foundation (Deutsche Forschungsgemeinschaft DFG) through the project 416318834 . We thank the Helmholtz-Zentrum Berlin für Materialien und Energie for the allocation of synchrotron radiation beamtime. The authors acknowledge Christoph Berthold and Frieder Lauxmann from Eberhard-Karls University Tuebingen for the µ-XRD² measurements.

Funders	Funder number
Eberhard-Karls University Tuebingen
U.S. Department of Energy
Office of Fossil Energy
Helmholtz-Zentrum Berlin für Materialien und Energie
Deutsche Forschungsgemeinschaft	416318834
Academy of Finland	296435

Keywords

High-temperature corrosion
Iron
Oxidation
SEM
SIMS
Steel
Sulphidation

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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.",

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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.

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

Abstract

Bibliographical note

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Keywords

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