| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials for Biomedical Implants
|
| Presentation Title |
Innovative Biodegradable Zn Alloys Produced by Rapid Solidification |
| Author(s) |
Wiktor Bednarczyk, Piotr Bała |
| On-Site Speaker (Planned) |
Wiktor Bednarczyk |
| Abstract Scope |
Zn alloys are emerging as promising biodegradable materials for bone fixations and cardiovascular implants, owing to their intermediate corrosion rate and excellent antibacterial properties. However, they face challenges such as low mechanical strength due to grain boundary sliding and poor long-term mechanical stability. Additionally, conventional plastic forming methods are ineffective in refining coarse second-phase particles, which are crucial for grain boundary strengthening and improving uniform corrosion.
In this study, we present a novel processing route combining rapid solidification (RS) via melt spinning and subsequent hot extrusion to address these issues. This approach for multicomponent Zn-based alloys (5 and more elements) achieves significant grain refinement below 500 nm and produces a uniform microstructure free of coarse second-phase grains. The resulting alloys exhibit the mechanical properties required for cardiovascular stent applications. Furthermore, the hot extrusion process stabilizes the microstructure and provides high thermal stability, enhancing the long-term performance of the alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Characterization, Process Technology |