Effect of minor Ca addition on microstructure and corrosion behavior of Mg–Y–Ca alloys
The poor corrosion resistance of magnesium and magnesium alloys limited their industry applications, especially attributed to the loose and porous corrosion product film. Moreover, it is of great importance to improve the corrosion resistance of magnesium alloy by economic and environmental protecti...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423022354 |
| _version_ | 1827780488505327616 |
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| author | Wenjun Ci Lili Deng Xianhua Chen Chunquan Liu Fusheng Pan |
| author_facet | Wenjun Ci Lili Deng Xianhua Chen Chunquan Liu Fusheng Pan |
| author_sort | Wenjun Ci |
| collection | DOAJ |
| description | The poor corrosion resistance of magnesium and magnesium alloys limited their industry applications, especially attributed to the loose and porous corrosion product film. Moreover, it is of great importance to improve the corrosion resistance of magnesium alloy by economic and environmental protection methods. In this study, the Mg–Y–Ca alloys prepared by the addition of trace Ca and Y elements showed good corrosion resistance. In addition, the effects of minor Ca on the microstructure and corrosion behavior of Mg–1Y alloy were systematically studied. With the increase of Ca content, the corrosion resistance of Mg–1Y-xCa alloys (x = 0, 0.05, 0.1 and 0.2 wt%) was found to improve and then decrease. Among prepared Mg–1Y-xCa alloys, Mg–1Y-0.05Ca exhibited the lowest corrosion rate of 0.757 mm y−1. The high corrosion resistance of Mg–1Y-0.05Ca can be attributed to the fine grain size, and the formation of a protective corrosion passivation film rich in Y2O3, CaCO3 and (MgCa)CO3. However, the excessive addition of Ca element led to the decline of corrosion resistance, resulting from the mass generated Mg2Ca phase causing serious micro-galvanic corrosion, which destroyed the stability of the corrosion product film and damaged the corrosion protection. |
| first_indexed | 2024-03-11T15:05:17Z |
| format | Article |
| id | doaj.art-eae5a70c9d2746a0a65815f368d71346 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:05:17Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-eae5a70c9d2746a0a65815f368d713462023-10-30T06:04:37ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012675027515Effect of minor Ca addition on microstructure and corrosion behavior of Mg–Y–Ca alloysWenjun Ci0Lili Deng1Xianhua Chen2Chunquan Liu3Fusheng Pan4College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, China; Corresponding author. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China.School of Mechanical Engineering, Guizhou University, Guiyang, 550025, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, ChinaThe poor corrosion resistance of magnesium and magnesium alloys limited their industry applications, especially attributed to the loose and porous corrosion product film. Moreover, it is of great importance to improve the corrosion resistance of magnesium alloy by economic and environmental protection methods. In this study, the Mg–Y–Ca alloys prepared by the addition of trace Ca and Y elements showed good corrosion resistance. In addition, the effects of minor Ca on the microstructure and corrosion behavior of Mg–1Y alloy were systematically studied. With the increase of Ca content, the corrosion resistance of Mg–1Y-xCa alloys (x = 0, 0.05, 0.1 and 0.2 wt%) was found to improve and then decrease. Among prepared Mg–1Y-xCa alloys, Mg–1Y-0.05Ca exhibited the lowest corrosion rate of 0.757 mm y−1. The high corrosion resistance of Mg–1Y-0.05Ca can be attributed to the fine grain size, and the formation of a protective corrosion passivation film rich in Y2O3, CaCO3 and (MgCa)CO3. However, the excessive addition of Ca element led to the decline of corrosion resistance, resulting from the mass generated Mg2Ca phase causing serious micro-galvanic corrosion, which destroyed the stability of the corrosion product film and damaged the corrosion protection.http://www.sciencedirect.com/science/article/pii/S2238785423022354Mg–Y–Ca alloysCorrosion resistanceMicrostructureCorrosion passivation film |
| spellingShingle | Wenjun Ci Lili Deng Xianhua Chen Chunquan Liu Fusheng Pan Effect of minor Ca addition on microstructure and corrosion behavior of Mg–Y–Ca alloys Journal of Materials Research and Technology Mg–Y–Ca alloys Corrosion resistance Microstructure Corrosion passivation film |
| title | Effect of minor Ca addition on microstructure and corrosion behavior of Mg–Y–Ca alloys |
| title_full | Effect of minor Ca addition on microstructure and corrosion behavior of Mg–Y–Ca alloys |
| title_fullStr | Effect of minor Ca addition on microstructure and corrosion behavior of Mg–Y–Ca alloys |
| title_full_unstemmed | Effect of minor Ca addition on microstructure and corrosion behavior of Mg–Y–Ca alloys |
| title_short | Effect of minor Ca addition on microstructure and corrosion behavior of Mg–Y–Ca alloys |
| title_sort | effect of minor ca addition on microstructure and corrosion behavior of mg y ca alloys |
| topic | Mg–Y–Ca alloys Corrosion resistance Microstructure Corrosion passivation film |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423022354 |
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