| Title: | Towards increased strength and retained ductility of Zn-Mg-(Ag) materials for medical devices by adopting powder metallurgy processing routes |
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| Authors: | ID Kubásek, Jiří (Author)
ID Nečas, David (Author)
ID Hybášek, Vojtěch (Author)
ID Jablonská, Eva (Author)
ID Donik, Črtomir (Author)
ID Paulin, Irena (Author)
ID Gogola, Peter (Author)
ID Kusý, Martin (Author)
ID Fojt, Jaroslav (Author)
ID Čavojský, Miroslav (Author)
ID Duchoň, Jan (Author)
ID Čapek, Jaroslav (Author) |
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| Files: |  PDF - Presentation file, download (14,67 MB)
MD5: A349BE9E750F149E82ED9AE8DC46D9FD
 URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S2238785425016072
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IMT - Institute of Metals and Technology
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| Abstract: | The development of bioabsorbable zinc-based alloys with tailored mechanical properties and biocompatibility holds great promise for advancing medical implant technology. In this study, Zn-Mg and Zn-Mg-Ag alloys were synthesized using mechanical alloying (MA) followed by extrusion to achieve a combination of enhanced strength, ductility, and corrosion resistance. MA for 4 hours produced ultrafine-grained powders incorporating Mg₂Zn₁₁ intermetallic phases and oxide particles, which contributed to microstructure stabilization during subsequent processing. Extrusion consolidated these powders into dense materials with a uniform grain size of ~700 nm, exhibiting ultimate tensile strengths up to 435 MPa and elongation to fracture of ~12%, representing a significant improvement over conventional processing methods. The addition of silver further enhanced the antibacterial properties, demonstrating notable efficacy against Staphylococcus epidermidis, while maintaining non-cytotoxic behavior in vitro. Corrosion rates remained low, with uniform surface degradation and the formation of protective corrosion layers. This work highlights the efficacy of combining powder metallurgy techniques to bioabsorbable zinc-based alloys with exceptional mechanical performance, corrosion behavior and in vitro cytocompatibility, providing a pathway for next-generation biodegradable medical devices. |
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| Keywords: | zinc, bioabsorbable materials, mechanical alloying, spark plasma sintering, microstructure |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 08.07.2025 |
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| Publisher: | Elsevier B. V. |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 4345–4361 |
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| Numbering: | Vol. 37 |
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| Source: | Journal of materials research and technology |
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| PID: | 20.500.12556/DiRROS-23190  |
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| UDC: | 620.1:669.55 |
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| ISSN on article: | 2214-0697 |
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| DOI: | 10.1016/j.jmrt.2025.06.185 |
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| COBISS.SI-ID: | 242216707 |
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| Copyright: | © 2025 The Authors |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji: Selase Torkornoo, David Nečas, Ingrid McCarroll, Vojtěch Hybášek, Baptiste Gault, Eva Jablonská, Črtomir Donik, Irena Paulin, Peter Gogola, Martin Kusý, Zdeněk Míchal, Jaroslav Fojt, Miroslav Čavojský, Jan Duchoň, Markéta Jarošová, Jaroslav Čapek;
Opis vira z dne 16. 7. 2025;
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| Publication date in DiRROS: | 05.08.2025 |
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| Views: | 379 |
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| Downloads: | 236 |
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