Nb-induced lattice changes to enhance corrosion resistance of Al0.5Ti3Zr0.5NbxMo0.2 high-entropy alloys
Abstract In this work, the effect of lattice structure on the corrosion behavior and passivation film properties of reinforced Al0.5Ti3Zr0.5NbxMo0.2 (x = 0.5,0.8,1) high-entropy alloys are investigated. A single-phase BCC Al0.5Ti3Zr0.5NbxMo0.2 (x = 0.5, 0.8, 1) high-entropy alloys, exhibiting good c...
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| Format: | Article |
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Nature Portfolio
2025-03-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-58211-9 |
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| _version_ | 1849390340416471040 |
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| author | Xuelian Yu Qingjun Chen Xia Cui Delai Ouyang |
| author_facet | Xuelian Yu Qingjun Chen Xia Cui Delai Ouyang |
| author_sort | Xuelian Yu |
| collection | DOAJ |
| description | Abstract In this work, the effect of lattice structure on the corrosion behavior and passivation film properties of reinforced Al0.5Ti3Zr0.5NbxMo0.2 (x = 0.5,0.8,1) high-entropy alloys are investigated. A single-phase BCC Al0.5Ti3Zr0.5NbxMo0.2 (x = 0.5, 0.8, 1) high-entropy alloys, exhibiting good corrosion resistance, are synthesized using vacuum arc melting. Nb improves the corrosion resistance of high-entropy alloys in two main ways. On the one hand, the alloys show preferential corrosion at the {011} crystalline planes. Increasing Nb content reduced the {011} crystalline plane spacing, enhancing the corrosion resistance of Al0.5Ti3Zr0.5NbMo0.2. On the other hand, during the corrosion process, Nb, which has a large atomic radius and strong oxygenophilicity, interacts with each metal element, contributing to the uphill diffusion of Al/Ti and the downhill diffusion of O. The low-valent oxides form first continuously react with the inward-diffusing O to form high-valent oxides. This results in the formation of a layered passivation film with high breakdown potential and high stability. This work provides a basis for designing chemically robust alloys for extreme environments. |
| format | Article |
| id | doaj-art-e01cbea2a378454bbee4d1ef0028e5d4 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-e01cbea2a378454bbee4d1ef0028e5d42025-08-20T03:41:42ZengNature PortfolioNature Communications2041-17232025-03-0116111310.1038/s41467-025-58211-9Nb-induced lattice changes to enhance corrosion resistance of Al0.5Ti3Zr0.5NbxMo0.2 high-entropy alloysXuelian Yu0Qingjun Chen1Xia Cui2Delai Ouyang3School of Materials Science and Engineering, Nanchang Hangkong UniversitySchool of Materials Science and Engineering, Nanchang Hangkong UniversitySchool of Materials Science and Engineering, Nanchang Hangkong UniversitySchool of Materials Science and Engineering, Nanchang Hangkong UniversityAbstract In this work, the effect of lattice structure on the corrosion behavior and passivation film properties of reinforced Al0.5Ti3Zr0.5NbxMo0.2 (x = 0.5,0.8,1) high-entropy alloys are investigated. A single-phase BCC Al0.5Ti3Zr0.5NbxMo0.2 (x = 0.5, 0.8, 1) high-entropy alloys, exhibiting good corrosion resistance, are synthesized using vacuum arc melting. Nb improves the corrosion resistance of high-entropy alloys in two main ways. On the one hand, the alloys show preferential corrosion at the {011} crystalline planes. Increasing Nb content reduced the {011} crystalline plane spacing, enhancing the corrosion resistance of Al0.5Ti3Zr0.5NbMo0.2. On the other hand, during the corrosion process, Nb, which has a large atomic radius and strong oxygenophilicity, interacts with each metal element, contributing to the uphill diffusion of Al/Ti and the downhill diffusion of O. The low-valent oxides form first continuously react with the inward-diffusing O to form high-valent oxides. This results in the formation of a layered passivation film with high breakdown potential and high stability. This work provides a basis for designing chemically robust alloys for extreme environments.https://doi.org/10.1038/s41467-025-58211-9 |
| spellingShingle | Xuelian Yu Qingjun Chen Xia Cui Delai Ouyang Nb-induced lattice changes to enhance corrosion resistance of Al0.5Ti3Zr0.5NbxMo0.2 high-entropy alloys Nature Communications |
| title | Nb-induced lattice changes to enhance corrosion resistance of Al0.5Ti3Zr0.5NbxMo0.2 high-entropy alloys |
| title_full | Nb-induced lattice changes to enhance corrosion resistance of Al0.5Ti3Zr0.5NbxMo0.2 high-entropy alloys |
| title_fullStr | Nb-induced lattice changes to enhance corrosion resistance of Al0.5Ti3Zr0.5NbxMo0.2 high-entropy alloys |
| title_full_unstemmed | Nb-induced lattice changes to enhance corrosion resistance of Al0.5Ti3Zr0.5NbxMo0.2 high-entropy alloys |
| title_short | Nb-induced lattice changes to enhance corrosion resistance of Al0.5Ti3Zr0.5NbxMo0.2 high-entropy alloys |
| title_sort | nb induced lattice changes to enhance corrosion resistance of al0 5ti3zr0 5nbxmo0 2 high entropy alloys |
| url | https://doi.org/10.1038/s41467-025-58211-9 |
| work_keys_str_mv | AT xuelianyu nbinducedlatticechangestoenhancecorrosionresistanceofal05ti3zr05nbxmo02highentropyalloys AT qingjunchen nbinducedlatticechangestoenhancecorrosionresistanceofal05ti3zr05nbxmo02highentropyalloys AT xiacui nbinducedlatticechangestoenhancecorrosionresistanceofal05ti3zr05nbxmo02highentropyalloys AT delaiouyang nbinducedlatticechangestoenhancecorrosionresistanceofal05ti3zr05nbxmo02highentropyalloys |