| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Novel Zn-Fe-Si Alloy as Biodegradable Stent Material |
| Author(s) |
Yuxin Zeng, Zeyi Guan, Jingke Liu, Xiaochun Li |
| On-Site Speaker (Planned) |
Yuxin Zeng |
| Abstract Scope |
Bioresorbable stents are an essential application for treatment of coronary artery disease. Among all material candidates, zinc alloys show a great potential because of their great biocompatibility. However, most research fail to keep the balance among strength, ductility, biocompatibility, and corrosion rate. Some ternary systems have been developed to achieve high strength by using nano-size intermetallic phases, but the biocompatibility of the nanoparticles is still debatable. In this paper, a new ternary system zinc-iron-silicon (Zn-Fe-Si) is developed as a novel alloy system for bioresorbable cardiovascular stents. Molten-salt-assisted stir casting is used to fabricate the material. The microstructure, mechanical properties and degradability are studied. Results demonstrated that the in-situ formed Fe-Si nanophase helps maintaining the ductility of the material as well as a favorable corrosion rate. This work suggested that this Zn-Fe-Si ternary system has a great potential and further investigation is much needed to develop desirable zinc alloy stents. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Nanotechnology, |