Long-term in vitro immersion corrosion mechanism of pure zinc fabricated by laser powder bed fusion
Pure zinc has emerged as a promising biodegradable metal for biomedical applications; however, its long-term in vitro corrosion behavior remains inadequately understood, particularly when produced via laser powder bed fusion (L-PBF). In this study, the corrosion behavior of L-PBF-fabricated pure zin...
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Elsevier
2025-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425015546 |
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| author | Yubao Zhang Kun Sun Liang Zhang Chengnan Wu Pengya Liang Wenyu Fan Yulong Fu |
| author_facet | Yubao Zhang Kun Sun Liang Zhang Chengnan Wu Pengya Liang Wenyu Fan Yulong Fu |
| author_sort | Yubao Zhang |
| collection | DOAJ |
| description | Pure zinc has emerged as a promising biodegradable metal for biomedical applications; however, its long-term in vitro corrosion behavior remains inadequately understood, particularly when produced via laser powder bed fusion (L-PBF). In this study, the corrosion behavior of L-PBF-fabricated pure zinc was systematically investigated during immersion in simulated body fluid (SBF) for up to 28 days, with emphasis on the evolution of corrosion products, formation of layered structures, and the influence of intrinsic fabrication defects. The results reveal the formation of a distinct multilayered corrosion product structure, where the outer layers predominantly consist of calcium phosphate compounds, Zn5(OH)8Cl2·H2O, and Zn5(CO3)2(OH)6, while the inner layer is mainly composed of ZnO/OH, magnesium oxide, or magnesium carbonate phases. Notably, the corrosion process proceeds through four distinct stages, which are significantly affected by L-PBF-induced defects and grain boundary features, jointly shaping the local electrochemical environment and corrosion dynamics. These findings advance the fundamental understanding of corrosion mechanisms in L-PBF-processed biodegradable zinc and highlight their implications for the design of customized biomedical implants. |
| format | Article |
| id | doaj-art-1e46e3b85a7f48959b30c0049d56c917 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-1e46e3b85a7f48959b30c0049d56c9172025-08-20T03:47:19ZengElsevierJournal of Materials Research and Technology2238-78542025-07-01371921193210.1016/j.jmrt.2025.06.132Long-term in vitro immersion corrosion mechanism of pure zinc fabricated by laser powder bed fusionYubao Zhang0Kun Sun1Liang Zhang2Chengnan Wu3Pengya Liang4Wenyu Fan5Yulong Fu6State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi'an 710049, PR China; School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR ChinaState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi'an 710049, PR China; School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China; Corresponding author. State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, PR China.State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi'an 710049, PR China; School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR ChinaState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi'an 710049, PR China; School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR ChinaState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi'an 710049, PR China; School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR ChinaState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi'an 710049, PR China; School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR ChinaState Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi'an 710049, PR China; School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, PR ChinaPure zinc has emerged as a promising biodegradable metal for biomedical applications; however, its long-term in vitro corrosion behavior remains inadequately understood, particularly when produced via laser powder bed fusion (L-PBF). In this study, the corrosion behavior of L-PBF-fabricated pure zinc was systematically investigated during immersion in simulated body fluid (SBF) for up to 28 days, with emphasis on the evolution of corrosion products, formation of layered structures, and the influence of intrinsic fabrication defects. The results reveal the formation of a distinct multilayered corrosion product structure, where the outer layers predominantly consist of calcium phosphate compounds, Zn5(OH)8Cl2·H2O, and Zn5(CO3)2(OH)6, while the inner layer is mainly composed of ZnO/OH, magnesium oxide, or magnesium carbonate phases. Notably, the corrosion process proceeds through four distinct stages, which are significantly affected by L-PBF-induced defects and grain boundary features, jointly shaping the local electrochemical environment and corrosion dynamics. These findings advance the fundamental understanding of corrosion mechanisms in L-PBF-processed biodegradable zinc and highlight their implications for the design of customized biomedical implants.http://www.sciencedirect.com/science/article/pii/S2238785425015546Immersion testLaser powder bed fusionPure zincCorrosion mechanismForming defects |
| spellingShingle | Yubao Zhang Kun Sun Liang Zhang Chengnan Wu Pengya Liang Wenyu Fan Yulong Fu Long-term in vitro immersion corrosion mechanism of pure zinc fabricated by laser powder bed fusion Journal of Materials Research and Technology Immersion test Laser powder bed fusion Pure zinc Corrosion mechanism Forming defects |
| title | Long-term in vitro immersion corrosion mechanism of pure zinc fabricated by laser powder bed fusion |
| title_full | Long-term in vitro immersion corrosion mechanism of pure zinc fabricated by laser powder bed fusion |
| title_fullStr | Long-term in vitro immersion corrosion mechanism of pure zinc fabricated by laser powder bed fusion |
| title_full_unstemmed | Long-term in vitro immersion corrosion mechanism of pure zinc fabricated by laser powder bed fusion |
| title_short | Long-term in vitro immersion corrosion mechanism of pure zinc fabricated by laser powder bed fusion |
| title_sort | long term in vitro immersion corrosion mechanism of pure zinc fabricated by laser powder bed fusion |
| topic | Immersion test Laser powder bed fusion Pure zinc Corrosion mechanism Forming defects |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425015546 |
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