High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing Environments
This study describes the water vapour effect on the oxidation resistance of 9Cr creep resistant steels. Boiler P91 and MarBN steels were oxidized for 3000 h in a simulated humid atmosphere with ~10% water vapour. The oxidation kinetics had a stable course for 1000 h and was evaluated by the weight g...
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MDPI AG
2022-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/2/616 |
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| author | Mária Hagarová Gabriela Baranová Martin Fujda Miloš Matvija Peter Horňak Jozef Bednarčík Daria Yudina |
| author_facet | Mária Hagarová Gabriela Baranová Martin Fujda Miloš Matvija Peter Horňak Jozef Bednarčík Daria Yudina |
| author_sort | Mária Hagarová |
| collection | DOAJ |
| description | This study describes the water vapour effect on the oxidation resistance of 9Cr creep resistant steels. Boiler P91 and MarBN steels were oxidized for 3000 h in a simulated humid atmosphere with ~10% water vapour. The oxidation kinetics had a stable course for 1000 h and was evaluated by the weight gain curves for both experimental steels and both oxidation temperatures. The oxidation rate was higher at 650 °C versus 600 °C, as reflected by the oxidation rate coefficient. A significant increase occurred after 1000 h of oxidation, which was related to the local breakdown oxide scale and oxide nodules were formed on steel. This oxidation behavior was influenced by the fact that a compact spinel structure of iron oxides and alloying elements were not formed on the steel. Analysis after 3000 h of exposure showed hematite Fe<sub>2</sub>O<sub>3</sub> formed on the outer layer, magnetite Fe<sub>3</sub>O<sub>4</sub> on the middle layer, and the bottom layer consisted of iron-chromium-spinel (Fe,Cr)<sub>2</sub>O<sub>3</sub>. |
| first_indexed | 2024-03-10T01:02:46Z |
| format | Article |
| id | doaj.art-ad0bedea3b9b4b268f9ad9cd35acb04c |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:02:46Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-ad0bedea3b9b4b268f9ad9cd35acb04c2023-11-23T14:32:11ZengMDPI AGMaterials1996-19442022-01-0115261610.3390/ma15020616High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing EnvironmentsMária Hagarová0Gabriela Baranová1Martin Fujda2Miloš Matvija3Peter Horňak4Jozef Bednarčík5Daria Yudina6Institute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice, 042 00 Košice, SlovakiaInstitute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice, 042 00 Košice, SlovakiaInstitute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice, 042 00 Košice, SlovakiaInstitute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice, 042 00 Košice, SlovakiaInstitute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice, 042 00 Košice, SlovakiaInstitute of Physics, Faculty of Science, Pavol Jozef Šafárik University in Košice, 041 54 Košice, SlovakiaInstitute of Physics, Faculty of Science, Pavol Jozef Šafárik University in Košice, 041 54 Košice, SlovakiaThis study describes the water vapour effect on the oxidation resistance of 9Cr creep resistant steels. Boiler P91 and MarBN steels were oxidized for 3000 h in a simulated humid atmosphere with ~10% water vapour. The oxidation kinetics had a stable course for 1000 h and was evaluated by the weight gain curves for both experimental steels and both oxidation temperatures. The oxidation rate was higher at 650 °C versus 600 °C, as reflected by the oxidation rate coefficient. A significant increase occurred after 1000 h of oxidation, which was related to the local breakdown oxide scale and oxide nodules were formed on steel. This oxidation behavior was influenced by the fact that a compact spinel structure of iron oxides and alloying elements were not formed on the steel. Analysis after 3000 h of exposure showed hematite Fe<sub>2</sub>O<sub>3</sub> formed on the outer layer, magnetite Fe<sub>3</sub>O<sub>4</sub> on the middle layer, and the bottom layer consisted of iron-chromium-spinel (Fe,Cr)<sub>2</sub>O<sub>3</sub>.https://www.mdpi.com/1996-1944/15/2/616creep resistant steelshigh temperature oxidationwater vapouroxide layerCr oxide |
| spellingShingle | Mária Hagarová Gabriela Baranová Martin Fujda Miloš Matvija Peter Horňak Jozef Bednarčík Daria Yudina High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing Environments Materials creep resistant steels high temperature oxidation water vapour oxide layer Cr oxide |
| title | High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing Environments |
| title_full | High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing Environments |
| title_fullStr | High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing Environments |
| title_full_unstemmed | High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing Environments |
| title_short | High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing Environments |
| title_sort | high temperature oxidation behavior of creep resistant steels in water vapour containing environments |
| topic | creep resistant steels high temperature oxidation water vapour oxide layer Cr oxide |
| url | https://www.mdpi.com/1996-1944/15/2/616 |
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