About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials and Implants
|
| Presentation Title |
Degradation behaviour of conventional wrought and additively manufactured WE43 in artificial saliva |
| Author(s) |
Nina Kovac, Anita Golub, Barbara Kapun, Slavko Kralj, Ingrid Milošev, Peter Rodič |
| On-Site Speaker (Planned) |
Nina Kovac |
| Abstract Scope |
Bioresorbable magnesium alloys are promising materials for biomedical implants, including oral applications. Among them, high-strength WE43 alloy containing yttrium, rare earths, and zirconium is one of the most studied biomedical Mg alloys. Additive manufacturing offers advantages through near-net-shape implant production. To date, degradation of additively manufactured WE43 in oral environments remains insufficiently understood and requires further studies.
This study investigates the degradation behaviour, governed by corrosion processes in artificial saliva, of two differently produced WE43 alloys: conventional wrought WE43 and wire-laser directed energy deposited WE43. Particular focus was on the influence of fluoride ions and the development of immersion-induced surface film, including Ca/P-containing surface precipitates, during prolonged immersion. Degradation was monitored using electrochemical impedance spectroscopy, potentiodynamic polarization, and hydrogen evolution measurements. SEM/EDS, XRD, and XPS identified surface morphology and composition changes. Findings indicate faster degradation of additively manufactured WE43 compared with conventional wrought WE43, especially in fluoride-containing artificial saliva. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Biomaterials, Magnesium |