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Materials
Volume 18
Issue 22
10.3390/ma18225150
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Article

Change in the Morphology of Alloy Corrosion Products Based on the FeAl Intermetallic Phase After Oxidation in Water Vapor at a Temperature of 700 °C for up to 2000 h

by
Janusz Cebulski
1,*,
Dorota Pasek
2,
Maria Sozańska
1,
Magdalena Popczyk
3,*,
Jadwiga Gabor
3,
Andrzej Swinarew
3,4 and
Jakub Wieczorek
1
1
Department of Materials Technology, Faculty of Materials Engineering and Industrial Digitalization, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland
2
Promobil s.c., Kopernika 12, 40-064 Katowice, Poland
3
Faculty of Science and Technology, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
4
Institute of Sport Science, The Jerzy Kukuczka Academy of Physical Education, Mikołowska 72A, 40-065 Katowice, Poland
*
Authors to whom correspondence should be addressed.
Materials 2025, 18(22), 5150; https://doi.org/10.3390/ma18225150 (registering DOI)
Submission received: 8 October 2025 / Revised: 3 November 2025 / Accepted: 9 November 2025 / Published: 12 November 2025
(This article belongs to the Special Issue Achievements in Foundry Materials and Technologies)
Versions Notes

Abstract

The surface of the Fe40Al5Cr0.2TiB alloy, after oxidation in steam at 700 °C, showed a varied morphology dependent on oxidation time. Initially, a fine, acicular oxide layer formed, which over time transformed into a more compact, lumpy structure corresponding to the α-Al2O3 phase. EDS analysis confirmed the dominance of aluminum and oxygen in the oxidation products, and XRD studies revealed the presence of the α-alumina phase. Optical profilometry revealed a significant increase in roughness parameters (Ra and Rz) after long-term exposure (2000 h), which correlates with the thickening and sinterization of the oxide layer. The obtained results indicate that in a water vapor environment, a stable α-Al2O3 phase can already be formed at a temperature of 700 °C, and its development leads to increased roughness.
Keywords: α-Al2O3; intermetallics phase; oxidation layer α-Al2O3; intermetallics phase; oxidation layer

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MDPI and ACS Style

Cebulski, J.; Pasek, D.; Sozańska, M.; Popczyk, M.; Gabor, J.; Swinarew, A.; Wieczorek, J. Change in the Morphology of Alloy Corrosion Products Based on the FeAl Intermetallic Phase After Oxidation in Water Vapor at a Temperature of 700 °C for up to 2000 h. Materials 2025, 18, 5150. https://doi.org/10.3390/ma18225150

AMA Style

Cebulski J, Pasek D, Sozańska M, Popczyk M, Gabor J, Swinarew A, Wieczorek J. Change in the Morphology of Alloy Corrosion Products Based on the FeAl Intermetallic Phase After Oxidation in Water Vapor at a Temperature of 700 °C for up to 2000 h. Materials. 2025; 18(22):5150. https://doi.org/10.3390/ma18225150

Chicago/Turabian Style

Cebulski, Janusz, Dorota Pasek, Maria Sozańska, Magdalena Popczyk, Jadwiga Gabor, Andrzej Swinarew, and Jakub Wieczorek. 2025. "Change in the Morphology of Alloy Corrosion Products Based on the FeAl Intermetallic Phase After Oxidation in Water Vapor at a Temperature of 700 °C for up to 2000 h" Materials 18, no. 22: 5150. https://doi.org/10.3390/ma18225150

APA Style

Cebulski, J., Pasek, D., Sozańska, M., Popczyk, M., Gabor, J., Swinarew, A., & Wieczorek, J. (2025). Change in the Morphology of Alloy Corrosion Products Based on the FeAl Intermetallic Phase After Oxidation in Water Vapor at a Temperature of 700 °C for up to 2000 h. Materials, 18(22), 5150. https://doi.org/10.3390/ma18225150

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