Study on the microstructure and corrosion behavior of newly designed (Si, Ti) micro-alloyed hot-dipped Zn–6Al–3Mg alloy coating
In this work, a novel hot-dipped Zn–6Al–3Mg-0.1Si-0.05Ti alloy coating was designed through (Si, Ti) microalloying, and the related microstructure and corrosion behavior in Cl− containing environment were studied. The results show that the mainly microstructures of the coating consist of Al dendrite...
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| Language: | English |
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424027170 |
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| author | Haotian Chen Yuanyuan Liang Renbo Song Xinwei Wang |
| author_facet | Haotian Chen Yuanyuan Liang Renbo Song Xinwei Wang |
| author_sort | Haotian Chen |
| collection | DOAJ |
| description | In this work, a novel hot-dipped Zn–6Al–3Mg-0.1Si-0.05Ti alloy coating was designed through (Si, Ti) microalloying, and the related microstructure and corrosion behavior in Cl− containing environment were studied. The results show that the mainly microstructures of the coating consist of Al dendrites, primary MgZn2, peritectic and ternary eutectic. The addition of trace quantity of Si and Ti leads to the formation of (Al,Si)3Ti and Mg2Si intermetallic compounds. The corrosion process can be divided into four stages, including the formation of non-protective products and Si-based oxide, the formation protective products, the coverage of the coating surface by corrosion products and the establishment of stable double corrosion product layers. The corrosion products of Mg2Si are beneficial in enhancing the insulating properties of protective corrosion products. (Al,Si)3Ti, acting as a cathode in the corrosion process, leads to a decrease in the rate of corrosion by decreasing the current density at the anode. Additionally, the oxide passive film formed subsequent to its corrosion help inhibit the transfer of charge over the coating surface. |
| format | Article |
| id | doaj-art-4b54a2d5da6b47aeb0201b35dfac7b79 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-4b54a2d5da6b47aeb0201b35dfac7b792025-08-20T01:57:24ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01338573858910.1016/j.jmrt.2024.11.189Study on the microstructure and corrosion behavior of newly designed (Si, Ti) micro-alloyed hot-dipped Zn–6Al–3Mg alloy coatingHaotian Chen0Yuanyuan Liang1Renbo Song2Xinwei Wang3School of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing, 100083, ChinaHandan Iron ＆ Steel Group Co. LTD, Handan, 056015, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing, 100083, China; Corresponding author.School of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing, 100083, ChinaIn this work, a novel hot-dipped Zn–6Al–3Mg-0.1Si-0.05Ti alloy coating was designed through (Si, Ti) microalloying, and the related microstructure and corrosion behavior in Cl− containing environment were studied. The results show that the mainly microstructures of the coating consist of Al dendrites, primary MgZn2, peritectic and ternary eutectic. The addition of trace quantity of Si and Ti leads to the formation of (Al,Si)3Ti and Mg2Si intermetallic compounds. The corrosion process can be divided into four stages, including the formation of non-protective products and Si-based oxide, the formation protective products, the coverage of the coating surface by corrosion products and the establishment of stable double corrosion product layers. The corrosion products of Mg2Si are beneficial in enhancing the insulating properties of protective corrosion products. (Al,Si)3Ti, acting as a cathode in the corrosion process, leads to a decrease in the rate of corrosion by decreasing the current density at the anode. Additionally, the oxide passive film formed subsequent to its corrosion help inhibit the transfer of charge over the coating surface.http://www.sciencedirect.com/science/article/pii/S2238785424027170Zn-6Al–3Mg-0.1Si-0.05Ti coatingMicrostructureCorrosionHot-dipped |
| spellingShingle | Haotian Chen Yuanyuan Liang Renbo Song Xinwei Wang Study on the microstructure and corrosion behavior of newly designed (Si, Ti) micro-alloyed hot-dipped Zn–6Al–3Mg alloy coating Journal of Materials Research and Technology Zn-6Al–3Mg-0.1Si-0.05Ti coating Microstructure Corrosion Hot-dipped |
| title | Study on the microstructure and corrosion behavior of newly designed (Si, Ti) micro-alloyed hot-dipped Zn–6Al–3Mg alloy coating |
| title_full | Study on the microstructure and corrosion behavior of newly designed (Si, Ti) micro-alloyed hot-dipped Zn–6Al–3Mg alloy coating |
| title_fullStr | Study on the microstructure and corrosion behavior of newly designed (Si, Ti) micro-alloyed hot-dipped Zn–6Al–3Mg alloy coating |
| title_full_unstemmed | Study on the microstructure and corrosion behavior of newly designed (Si, Ti) micro-alloyed hot-dipped Zn–6Al–3Mg alloy coating |
| title_short | Study on the microstructure and corrosion behavior of newly designed (Si, Ti) micro-alloyed hot-dipped Zn–6Al–3Mg alloy coating |
| title_sort | study on the microstructure and corrosion behavior of newly designed si ti micro alloyed hot dipped zn 6al 3mg alloy coating |
| topic | Zn-6Al–3Mg-0.1Si-0.05Ti coating Microstructure Corrosion Hot-dipped |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424027170 |
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