Microstructure and oxidation behavior of CoCrCuFeNi high entropy alloy at 900 °C
CoCrCuFeNi high entropy alloy (HEA) was prepared by vacuum arc melting. The Microstructure and high temperature oxidation behavior of CoCrCuFeNi HEA was studied. The results show that CoCrCuFeNi high-entropy alloy exhibits a dual-phase FCC structure with both a Cu-poor and a Cu-rich phase. The weigh...
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Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425011718 |
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| author | Zilong Wu Pei Yuwen Yuanmi Zhang Chungen Zhou |
| author_facet | Zilong Wu Pei Yuwen Yuanmi Zhang Chungen Zhou |
| author_sort | Zilong Wu |
| collection | DOAJ |
| description | CoCrCuFeNi high entropy alloy (HEA) was prepared by vacuum arc melting. The Microstructure and high temperature oxidation behavior of CoCrCuFeNi HEA was studied. The results show that CoCrCuFeNi high-entropy alloy exhibits a dual-phase FCC structure with both a Cu-poor and a Cu-rich phase. The weight gain of the alloy is 2.2 mg/cm2 after oxidation at 900 °C for 100 h. The oxidation kinetics followed the two-stage parabolic rate law. Oxidation product formed on the surface of the alloy has three-layer structure. The outer layer, the middle layer and the inner layer are consisted of CuO, (Ni,Co)(Cr,Fe)2O4 spinel oxide and Cr2O3, respectively. The oxidation mechanism of CoCrCuFeNi high entropy alloy has been discussed. |
| format | Article |
| id | doaj-art-137e92e02d2d4ece969b43fad5753034 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-137e92e02d2d4ece969b43fad57530342025-08-20T02:15:24ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01367696770410.1016/j.jmrt.2025.05.017Microstructure and oxidation behavior of CoCrCuFeNi high entropy alloy at 900 °CZilong Wu0Pei Yuwen1Yuanmi Zhang2Chungen Zhou3China Aero-Polytechnology Establishment, Beijing, 100028, ChinaDepartment of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Key Laboratory of Aerospace Materials and Performance (Ministry of Education), Beijing, 100191, China; Corresponding author.Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Key Laboratory of Aerospace Materials and Performance (Ministry of Education), Beijing, 100191, ChinaDepartment of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Key Laboratory of Aerospace Materials and Performance (Ministry of Education), Beijing, 100191, China; Corresponding author.CoCrCuFeNi high entropy alloy (HEA) was prepared by vacuum arc melting. The Microstructure and high temperature oxidation behavior of CoCrCuFeNi HEA was studied. The results show that CoCrCuFeNi high-entropy alloy exhibits a dual-phase FCC structure with both a Cu-poor and a Cu-rich phase. The weight gain of the alloy is 2.2 mg/cm2 after oxidation at 900 °C for 100 h. The oxidation kinetics followed the two-stage parabolic rate law. Oxidation product formed on the surface of the alloy has three-layer structure. The outer layer, the middle layer and the inner layer are consisted of CuO, (Ni,Co)(Cr,Fe)2O4 spinel oxide and Cr2O3, respectively. The oxidation mechanism of CoCrCuFeNi high entropy alloy has been discussed.http://www.sciencedirect.com/science/article/pii/S2238785425011718CoCrCuFeNi HEAMicrostructureHigh temperature oxidation |
| spellingShingle | Zilong Wu Pei Yuwen Yuanmi Zhang Chungen Zhou Microstructure and oxidation behavior of CoCrCuFeNi high entropy alloy at 900 °C Journal of Materials Research and Technology CoCrCuFeNi HEA Microstructure High temperature oxidation |
| title | Microstructure and oxidation behavior of CoCrCuFeNi high entropy alloy at 900 °C |
| title_full | Microstructure and oxidation behavior of CoCrCuFeNi high entropy alloy at 900 °C |
| title_fullStr | Microstructure and oxidation behavior of CoCrCuFeNi high entropy alloy at 900 °C |
| title_full_unstemmed | Microstructure and oxidation behavior of CoCrCuFeNi high entropy alloy at 900 °C |
| title_short | Microstructure and oxidation behavior of CoCrCuFeNi high entropy alloy at 900 °C |
| title_sort | microstructure and oxidation behavior of cocrcufeni high entropy alloy at 900 °c |
| topic | CoCrCuFeNi HEA Microstructure High temperature oxidation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425011718 |
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