Effect of Zn content on corrosion behavior of Mg-Y-Zn alloys
The microstructure, corrosion behavior, and electrochemical behavior of as-cast Mg-4Y-xZn (x=1,2,3,4 wt.%) are studied by SEM, weight loss and electrochemical tests. Mg12YZn (X), Mg3Y2Zn3 (W) and Mg24Y5 constitute the phase composition system of the alloy. When Zn content is 1 wt.%, all tests reveal...
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University of Belgrade, Technical Faculty, Bor
2022-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392100048S.pdf |
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| _version_ | 1832574183285981184 |
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| author | Shi Y. Liu X.-Q. Liu Z.-L. Xie H.-J. Wang Y.-H. Li J. |
| author_facet | Shi Y. Liu X.-Q. Liu Z.-L. Xie H.-J. Wang Y.-H. Li J. |
| author_sort | Shi Y. |
| collection | DOAJ |
| description | The microstructure, corrosion behavior, and electrochemical behavior of as-cast Mg-4Y-xZn (x=1,2,3,4 wt.%) are studied by SEM, weight loss and electrochemical tests. Mg12YZn (X), Mg3Y2Zn3 (W) and Mg24Y5 constitute the phase composition system of the alloy. When Zn content is 1 wt.%, all tests reveal that alloy has the optimal corrosion performance. The second phase in these alloys, due to their nobler nature than α-Mg, exists as a cathode during the corrosion process, so that α-Mg preferentially occurs corrosion to accelerate the formation of corrosion pits. After soaking in 3.5 wt.% NaCl solution for some time, the stability of the W phase changed, and gradually dissolved, which was finally removed by chromic acid used for removal of corrosion products. In addition, X phase can be used as an anode in the micro-galvanic cells formed with W phase to reduce the corrosion rate of α-Mg and thus improve the corrosion performance of the alloy. |
| format | Article |
| id | doaj-art-b50d8afac0dd490aae569f619b089412 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-b50d8afac0dd490aae569f619b0894122025-02-02T00:42:48ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752022-01-01581516110.2298/JMMB210525048S1450-53392100048SEffect of Zn content on corrosion behavior of Mg-Y-Zn alloysShi Y.0Liu X.-Q.1Liu Z.-L.2Xie H.-J.3Wang Y.-H.4Li J.5College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China + Jiangsu (Zhongyi) Engineering Research Center of Light Alloy Precision Die Casting, Changshu, Jiangsu, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China + Jiangsu (Zhongyi) Engineering Research Center of Light Alloy Precision Die Casting, Changshu, Jiangsu, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, ChinaCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, ChinaJiangsu (Zhongyi) Engineering Research Center of Light Alloy Precision Die Casting, Changshu, Jiangsu, China + Jiangsu Favour Automotive New Stuff Sci‐Tech Co., Ltd., Changshu, ChinaThe microstructure, corrosion behavior, and electrochemical behavior of as-cast Mg-4Y-xZn (x=1,2,3,4 wt.%) are studied by SEM, weight loss and electrochemical tests. Mg12YZn (X), Mg3Y2Zn3 (W) and Mg24Y5 constitute the phase composition system of the alloy. When Zn content is 1 wt.%, all tests reveal that alloy has the optimal corrosion performance. The second phase in these alloys, due to their nobler nature than α-Mg, exists as a cathode during the corrosion process, so that α-Mg preferentially occurs corrosion to accelerate the formation of corrosion pits. After soaking in 3.5 wt.% NaCl solution for some time, the stability of the W phase changed, and gradually dissolved, which was finally removed by chromic acid used for removal of corrosion products. In addition, X phase can be used as an anode in the micro-galvanic cells formed with W phase to reduce the corrosion rate of α-Mg and thus improve the corrosion performance of the alloy.http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392100048S.pdfmg-y-znsecond phasecorrosion behaviorselectrochemical behaviors |
| spellingShingle | Shi Y. Liu X.-Q. Liu Z.-L. Xie H.-J. Wang Y.-H. Li J. Effect of Zn content on corrosion behavior of Mg-Y-Zn alloys Journal of Mining and Metallurgy. Section B: Metallurgy mg-y-zn second phase corrosion behaviors electrochemical behaviors |
| title | Effect of Zn content on corrosion behavior of Mg-Y-Zn alloys |
| title_full | Effect of Zn content on corrosion behavior of Mg-Y-Zn alloys |
| title_fullStr | Effect of Zn content on corrosion behavior of Mg-Y-Zn alloys |
| title_full_unstemmed | Effect of Zn content on corrosion behavior of Mg-Y-Zn alloys |
| title_short | Effect of Zn content on corrosion behavior of Mg-Y-Zn alloys |
| title_sort | effect of zn content on corrosion behavior of mg y zn alloys |
| topic | mg-y-zn second phase corrosion behaviors electrochemical behaviors |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392100048S.pdf |
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