| Title: | High-temperature oxidation of boiler steels at 650 °C |
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| Authors: | ID Burja, Jaka (Author)
ID Šetina, Barbara (Author)
ID Žužek, Borut (Author)
ID Balaško, Tilen (Author) |
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| Files: |  PDF - Presentation file, download (12,99 MB)
MD5: BAA6936E986CFEF5B5F3232420F0E0EE
 URL - Source URL, visit https://www.mdpi.com/2075-4701/13/11/1887
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IMT - Institute of Metals and Technology
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| Abstract: | This study presents a comprehensive investigation of the formation, composition and
behaviour of oxide layers during the high-temperature oxidation of four different steel alloys (16Mo3,
13Cr, T24 and P91) at a uniform temperature of 650 °C. The study is aimed at assessing the oxidation
damage due to short-term overheating. The research combines CALPHAD (CALculation of PHAse
Diagrams) calculations, thermogravimetric analysis (TGA) and advanced microscopy techniques, in-
cluding scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD), to elucidate
the complex mechanisms controlling oxidation kinetics and oxide layer development. CALPHAD
calculations were used to determine the thermodynamically stable phases for each steel type at 650
◦C and different oxygen activities. The results showed different phase compositions, highlighting
the importance of the chromium content in steel for the formation of oxide layers. The different
oxidation kinetics and oxide layer compositions are presented and associated with the increased risk
of material degradation due to overheating. These results have significant implications for industrial
applications, mainly the susceptibility to oxidation of low-alloyed steels like 16Mo3 and 13 Cr and
contribute to a deeper understanding of oxidation processes in steels. |
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| Keywords: | high-temperature oxidation, thermogravimetric analysis, kinetics, CALPHAD, boiler steels, SEM, EBSD |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 13.11.2023 |
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| Publisher: | MDPI |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-16 |
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| Numbering: | Vol. 13, iss. 11 |
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| Source: | Švica |
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| PID: | 20.500.12556/DiRROS-18018  |
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| UDC: | 669 |
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| ISSN on article: | 2075-4701 |
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| DOI: | 10.3390/met13111887 |
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| COBISS.SI-ID: | 172044803 |
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| Copyright: | © 2023 by the authors |
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| Note: | Article no.: 1887;
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| Publication date in DiRROS: | 26.01.2024 |
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| Views: | 727 |
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| Downloads: | 329 |
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