| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2023
|
| Presentation Title |
Development of Magnesium-Strontium / Calcium (Mg-Sr/Ca) Based Alloys with Improved Sinterability for Next Generation Biomedical Implants |
| Author(s) |
Mert Celikin, Ava Azadi, Hyeonseok Kim, Ted Vaughan, Eoin O'Cearbhaill |
| On-Site Speaker (Planned) |
Mert Celikin |
| Abstract Scope |
The use of biodegradable alloys for bone fixation devices have potential to improve patients’ quality of life by avoiding the necessary secondary operations conducted regularly for the removal of implants fabricated from conventional non-resorbable alloys. Mg-alloys have excellent biocompatibility and biodegradability along with low modulus of elasticity which will decrease bone-shielding effects. However, low corrosion resistance and relatively poor mechanical performance limit their use for biomedical applications. This study focuses on the processing of novel Mg-Sr based alloys via powder metallurgical route. Thermodynamic calculations are used to predict the liquid phase fractions in order to control sinterability and porosity levels without compensating structural integrity. Materials characterisation was conducted to validate the thermodynamic modelling results using optical and scanning electron microscopy (SEM/EDS) as well as X-ray Diffraction (XRD). Final porosity levels were determined using X-ray Computed Tomography (CT). Mechanical performance was evaluated in comparison to cast alloys via compression testing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Powder Materials, Biomaterials |