Corrosion mechanism of Al2O3–C stopper rod by calcium treated molten steel
The stopper rod plays a crucial role in continuous casting by controlling the flow of molten steel into the mold in the tundish, ensuring a stable molten steel level, and facilitating smooth operation. Despite its importance, limited research has been conducted on the corrosion mechanism of molten s...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029351 |
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| author | Lidong Xing Jingjing Liu Yanping Bao Min Wang |
| author_facet | Lidong Xing Jingjing Liu Yanping Bao Min Wang |
| author_sort | Lidong Xing |
| collection | DOAJ |
| description | The stopper rod plays a crucial role in continuous casting by controlling the flow of molten steel into the mold in the tundish, ensuring a stable molten steel level, and facilitating smooth operation. Despite its importance, limited research has been conducted on the corrosion mechanism of molten steel on stopper rods, particularly in the context of calcium treated molten steel. Herein, the difference of morphology, elemental composition, phase composition and distribution between the erosion layer and the substrate of stopper rod was studied by dissecting and characterizing the stopper rod. The microstructure of the erosion layer is more compact, while the microstructure of the substrate is relatively loose. Compared with the substrate, the erosion layer also contains Fe, (Ca, Al, Si) O and (Al, Mg) O phases. The specific phases in the erosion layer are MgAl2O4, Ca2(Al(AlSi)O7), and CaAl12O19. Laboratory simulation experiments show that stopper rod is very beneficial to the cleanliness of molten steel, but it will reduce the content of Ca, Mg, and Al elements in molten steel. As a result, the corrosion mechanism of calcium treated molten steel on Al2O3–C stopper rod was clarified. |
| format | Article |
| id | doaj-art-faad8dd051844bb6a0cdc902b271b0cf |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-faad8dd051844bb6a0cdc902b271b0cf2025-01-19T06:25:35ZengElsevierJournal of Materials Research and Technology2238-78542025-01-0134924931Corrosion mechanism of Al2O3–C stopper rod by calcium treated molten steelLidong Xing0Jingjing Liu1Yanping Bao2Min Wang3Technical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting, University of Science and Technology Beijing (USTB), Beijing, 100083, ChinaTechnical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting, University of Science and Technology Beijing (USTB), Beijing, 100083, ChinaCorresponding author.; Technical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting, University of Science and Technology Beijing (USTB), Beijing, 100083, ChinaTechnical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting, University of Science and Technology Beijing (USTB), Beijing, 100083, ChinaThe stopper rod plays a crucial role in continuous casting by controlling the flow of molten steel into the mold in the tundish, ensuring a stable molten steel level, and facilitating smooth operation. Despite its importance, limited research has been conducted on the corrosion mechanism of molten steel on stopper rods, particularly in the context of calcium treated molten steel. Herein, the difference of morphology, elemental composition, phase composition and distribution between the erosion layer and the substrate of stopper rod was studied by dissecting and characterizing the stopper rod. The microstructure of the erosion layer is more compact, while the microstructure of the substrate is relatively loose. Compared with the substrate, the erosion layer also contains Fe, (Ca, Al, Si) O and (Al, Mg) O phases. The specific phases in the erosion layer are MgAl2O4, Ca2(Al(AlSi)O7), and CaAl12O19. Laboratory simulation experiments show that stopper rod is very beneficial to the cleanliness of molten steel, but it will reduce the content of Ca, Mg, and Al elements in molten steel. As a result, the corrosion mechanism of calcium treated molten steel on Al2O3–C stopper rod was clarified.http://www.sciencedirect.com/science/article/pii/S2238785424029351Corrosion mechanismStopper rodCalcium treated steelErosion layer |
| spellingShingle | Lidong Xing Jingjing Liu Yanping Bao Min Wang Corrosion mechanism of Al2O3–C stopper rod by calcium treated molten steel Journal of Materials Research and Technology Corrosion mechanism Stopper rod Calcium treated steel Erosion layer |
| title | Corrosion mechanism of Al2O3–C stopper rod by calcium treated molten steel |
| title_full | Corrosion mechanism of Al2O3–C stopper rod by calcium treated molten steel |
| title_fullStr | Corrosion mechanism of Al2O3–C stopper rod by calcium treated molten steel |
| title_full_unstemmed | Corrosion mechanism of Al2O3–C stopper rod by calcium treated molten steel |
| title_short | Corrosion mechanism of Al2O3–C stopper rod by calcium treated molten steel |
| title_sort | corrosion mechanism of al2o3 c stopper rod by calcium treated molten steel |
| topic | Corrosion mechanism Stopper rod Calcium treated steel Erosion layer |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029351 |
| work_keys_str_mv | AT lidongxing corrosionmechanismofal2o3cstopperrodbycalciumtreatedmoltensteel AT jingjingliu corrosionmechanismofal2o3cstopperrodbycalciumtreatedmoltensteel AT yanpingbao corrosionmechanismofal2o3cstopperrodbycalciumtreatedmoltensteel AT minwang corrosionmechanismofal2o3cstopperrodbycalciumtreatedmoltensteel |