Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys
In the anastomotic surgery, the currently used degradable magnesium alloys are facing some bottleneck problems such as lower mechanical properties and slower degradation rate. In this study, the novel biodegradable extruded Mg–1Zn–0.2Ca-xAg (x = 0, 1, 2, 4) alloys will be developed and the correspon...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ab6a52 |
| _version_ | 1827869450771103744 |
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| author | Yingzhong Ma Dexin Wang Hongxiang Li Fusong Yuan Changlin Yang Jishan Zhang |
| author_facet | Yingzhong Ma Dexin Wang Hongxiang Li Fusong Yuan Changlin Yang Jishan Zhang |
| author_sort | Yingzhong Ma |
| collection | DOAJ |
| description | In the anastomotic surgery, the currently used degradable magnesium alloys are facing some bottleneck problems such as lower mechanical properties and slower degradation rate. In this study, the novel biodegradable extruded Mg–1Zn–0.2Ca-xAg (x = 0, 1, 2, 4) alloys will be developed and the corresponding microstructure, mechanical, and corrosion properties after Ag addition will be investigated. The results indicate that with the Ag addition, the grain size is refined due to fully dynamic recrystallization and Ag _17 Mg _54 phase, an important strengthening phase, begin to be precipitated in the Ag-contained alloys. Due to the stronger solution strengthening and precipitation strengthening, the Mg–1Zn–0.2Ca-4Ag alloy attains the highest ultimate tensile strength among all the alloys. Moreover, Ag element also enhances the electrode potential of the matrix, reduces the susceptibility of pitting corrosion and accelerates the corrosion rate of the alloys by micro-galvanic corrosion between the second phases and the matrix from the analyses of corrosion products and 3D Volta potential map. As a result, 4Ag alloys attain the fastest degradation rate among all the alloys. Combing the mechanical and corrosion results, it can be seen that 4Ag alloys, as novel biodegradable magnesium alloys, can meet the requirement of anastomotic surgery preferably, exhibiting the better application prospects. |
| first_indexed | 2024-03-12T15:45:24Z |
| format | Article |
| id | doaj.art-bec06c9b0336476d805cfcc6ef95cf9a |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:45:24Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-bec06c9b0336476d805cfcc6ef95cf9a2023-08-09T15:29:42ZengIOP PublishingMaterials Research Express2053-15912020-01-017101541410.1088/2053-1591/ab6a52Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloysYingzhong Ma0Dexin Wang1Hongxiang Li2https://orcid.org/0000-0001-9825-054XFusong Yuan3Changlin Yang4Jishan Zhang5State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaCenter of Digital Dentistry, Peking University School and Hospital of Stomatology , Beijing 100081, People’s Republic of ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University , Xi’an 710072, People’s Republic of ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaIn the anastomotic surgery, the currently used degradable magnesium alloys are facing some bottleneck problems such as lower mechanical properties and slower degradation rate. In this study, the novel biodegradable extruded Mg–1Zn–0.2Ca-xAg (x = 0, 1, 2, 4) alloys will be developed and the corresponding microstructure, mechanical, and corrosion properties after Ag addition will be investigated. The results indicate that with the Ag addition, the grain size is refined due to fully dynamic recrystallization and Ag _17 Mg _54 phase, an important strengthening phase, begin to be precipitated in the Ag-contained alloys. Due to the stronger solution strengthening and precipitation strengthening, the Mg–1Zn–0.2Ca-4Ag alloy attains the highest ultimate tensile strength among all the alloys. Moreover, Ag element also enhances the electrode potential of the matrix, reduces the susceptibility of pitting corrosion and accelerates the corrosion rate of the alloys by micro-galvanic corrosion between the second phases and the matrix from the analyses of corrosion products and 3D Volta potential map. As a result, 4Ag alloys attain the fastest degradation rate among all the alloys. Combing the mechanical and corrosion results, it can be seen that 4Ag alloys, as novel biodegradable magnesium alloys, can meet the requirement of anastomotic surgery preferably, exhibiting the better application prospects.https://doi.org/10.1088/2053-1591/ab6a52extrusionmicrostructuremechanical and corrosion propertiesanastomotic surgeryMg alloy |
| spellingShingle | Yingzhong Ma Dexin Wang Hongxiang Li Fusong Yuan Changlin Yang Jishan Zhang Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys Materials Research Express extrusion microstructure mechanical and corrosion properties anastomotic surgery Mg alloy |
| title | Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys |
| title_full | Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys |
| title_fullStr | Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys |
| title_full_unstemmed | Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys |
| title_short | Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys |
| title_sort | microstructure mechanical and corrosion properties of novel quaternary biodegradable extruded mg 1zn 0 2ca xag alloys |
| topic | extrusion microstructure mechanical and corrosion properties anastomotic surgery Mg alloy |
| url | https://doi.org/10.1088/2053-1591/ab6a52 |
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