Micro-alloyed Mg-Ca: Corrosion susceptibility to heating history and a plain problem-solving approach
The exceptionally low corrosion rate (∼0.1 mm y–1 in concentrated NaCl solution for 7 days) enables lean Mg-Ca alloys great potential for diverse applications, particularly if relevant properties (e.g. mechanical strength, electrochemical performance, etc.) can be enhanced by thermomechanical proces...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-04-01
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| Series: | Journal of Magnesium and Alloys |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956723000087 |
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| author | Min Deng Linqian Wang Darya Snihirova Jan Bohlen Gerrit Kurz Sviatlana V. Lamaka Daniel Höche Mikhail L. Zheludkevich |
| author_facet | Min Deng Linqian Wang Darya Snihirova Jan Bohlen Gerrit Kurz Sviatlana V. Lamaka Daniel Höche Mikhail L. Zheludkevich |
| author_sort | Min Deng |
| collection | DOAJ |
| description | The exceptionally low corrosion rate (∼0.1 mm y–1 in concentrated NaCl solution for 7 days) enables lean Mg-Ca alloys great potential for diverse applications, particularly if relevant properties (e.g. mechanical strength, electrochemical performance, etc.) can be enhanced by thermomechanical processing. However, herein it is demonstrated that the corrosion performance of lean Mg-Ca is susceptible to the heating process. The corrosion rate of Mg-0.15 wt% Ca alloy is remarkably accelerated after annealing even for a short time (4 h at 400 °C) because Fe precipitation readily takes place. Fortunately, it is found that micro-alloying with dedicated additional elements is able to solve this problem. Nevertheless, the problem-solving capability is dependent on the element category, particularly the ability of the alloying element to constrain the Fe precipitation. Among the three studied elements (i.e. Sn, Ge and In), only In shows good competence of restricting the formation of Fe-containing precipitates, thereby contributing to retention of the superior corrosion resistance after annealing even at a rigorous condition (24 h at 450 °C). The finding creates good foundation for follow-up work of developing lean Mg-Ca-based alloys combining high corrosion resistance, superior electrochemical performance with excellent mechanical properties for applications as biodegradable implants and anode materials for aqueous batteries. |
| first_indexed | 2024-03-13T07:42:33Z |
| format | Article |
| id | doaj.art-2fbc42f5eb434c37a62dbbe47aca4965 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-03-13T07:42:33Z |
| publishDate | 2023-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-2fbc42f5eb434c37a62dbbe47aca49652023-06-03T04:22:06ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672023-04-0111411931205Micro-alloyed Mg-Ca: Corrosion susceptibility to heating history and a plain problem-solving approachMin Deng0Linqian Wang1Darya Snihirova2Jan Bohlen3Gerrit Kurz4Sviatlana V. Lamaka5Daniel Höche6Mikhail L. Zheludkevich7Institute of Surface Science, Helmholtz-Zentrum Hereon, Max-Planck Str. 1, Geesthacht 21502, Germany; Corresponding authors.Institute of Surface Science, Helmholtz-Zentrum Hereon, Max-Planck Str. 1, Geesthacht 21502, Germany; Corresponding authors.Institute of Surface Science, Helmholtz-Zentrum Hereon, Max-Planck Str. 1, Geesthacht 21502, GermanyInstitute of Material and Process Design, Helmholtz-Zentrum Hereon, Geesthacht 21502, GermanyInstitute of Material and Process Design, Helmholtz-Zentrum Hereon, Geesthacht 21502, GermanyInstitute of Surface Science, Helmholtz-Zentrum Hereon, Max-Planck Str. 1, Geesthacht 21502, GermanyInstitute of Surface Science, Helmholtz-Zentrum Hereon, Max-Planck Str. 1, Geesthacht 21502, GermanyInstitute of Surface Science, Helmholtz-Zentrum Hereon, Max-Planck Str. 1, Geesthacht 21502, Germany; Institute of Materials Science, Faculty of Engineering, Kiel University, Kiel 24143, GermanyThe exceptionally low corrosion rate (∼0.1 mm y–1 in concentrated NaCl solution for 7 days) enables lean Mg-Ca alloys great potential for diverse applications, particularly if relevant properties (e.g. mechanical strength, electrochemical performance, etc.) can be enhanced by thermomechanical processing. However, herein it is demonstrated that the corrosion performance of lean Mg-Ca is susceptible to the heating process. The corrosion rate of Mg-0.15 wt% Ca alloy is remarkably accelerated after annealing even for a short time (4 h at 400 °C) because Fe precipitation readily takes place. Fortunately, it is found that micro-alloying with dedicated additional elements is able to solve this problem. Nevertheless, the problem-solving capability is dependent on the element category, particularly the ability of the alloying element to constrain the Fe precipitation. Among the three studied elements (i.e. Sn, Ge and In), only In shows good competence of restricting the formation of Fe-containing precipitates, thereby contributing to retention of the superior corrosion resistance after annealing even at a rigorous condition (24 h at 450 °C). The finding creates good foundation for follow-up work of developing lean Mg-Ca-based alloys combining high corrosion resistance, superior electrochemical performance with excellent mechanical properties for applications as biodegradable implants and anode materials for aqueous batteries.http://www.sciencedirect.com/science/article/pii/S2213956723000087MagnesiumMicro-alloyingThermomechanical processingCorrosionImpurity |
| spellingShingle | Min Deng Linqian Wang Darya Snihirova Jan Bohlen Gerrit Kurz Sviatlana V. Lamaka Daniel Höche Mikhail L. Zheludkevich Micro-alloyed Mg-Ca: Corrosion susceptibility to heating history and a plain problem-solving approach Journal of Magnesium and Alloys Magnesium Micro-alloying Thermomechanical processing Corrosion Impurity |
| title | Micro-alloyed Mg-Ca: Corrosion susceptibility to heating history and a plain problem-solving approach |
| title_full | Micro-alloyed Mg-Ca: Corrosion susceptibility to heating history and a plain problem-solving approach |
| title_fullStr | Micro-alloyed Mg-Ca: Corrosion susceptibility to heating history and a plain problem-solving approach |
| title_full_unstemmed | Micro-alloyed Mg-Ca: Corrosion susceptibility to heating history and a plain problem-solving approach |
| title_short | Micro-alloyed Mg-Ca: Corrosion susceptibility to heating history and a plain problem-solving approach |
| title_sort | micro alloyed mg ca corrosion susceptibility to heating history and a plain problem solving approach |
| topic | Magnesium Micro-alloying Thermomechanical processing Corrosion Impurity |
| url | http://www.sciencedirect.com/science/article/pii/S2213956723000087 |
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