| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
| Presentation Title |
Characterization of Biodegradable Mg-1.2Zn-0.5Ca-0.5Mn Alloy Powder for Additive Manufacturing |
| Author(s) |
Agnieszka Chmielewska, Daehyun Cho, Thomas Avey, Alan Luo, David Dean |
| On-Site Speaker (Planned) |
Agnieszka Chmielewska |
| Abstract Scope |
Mg-Zn-Ca-based alloys have shown promise for use in resorbable medical devices or as device components. We are studying Mg-1.2Zn-0.5Ca-0.5Mn as a potential component of mandibular graft fixation that is both strong enough initially to bear masticatory loads and then lose strength once the bone has healed. Additive manufacturing of a biomedical magnesium alloy would facilitate fixation of personalized geometries. Therefore, we have fabricated Mg-1.2Zn-0.5Ca-0.5Mn alloy powder using a Compact Induction Atomizer IMCS-1700-MAS (MTI Corporation, USA). The powder was subsequently sieved to select grain size and remove atomization residues. Laser diffraction powder analysis (Mini3D, Kamika, Poland) showed particle size distribution was D10 =22.3µm; D50=45.4µm; D90=72.3 µm. Zingg particle shape analysis showed that 85.8% of the particles have a spherical shape which was confirmed by SEM. Microscopic observations after sieving reveal a high proportion of particles below 1 µm in diameter. Powder metallography proved that powder does not have any significant porosity. |