Characterization of a Biodegradable Mg-Alloy after SLM Processing

Raducanu, D.; Cojocaru, V.D.; Nocivin, A.; Drob, S.I.; Hendea, R.E.; Stanciu, D.; Ivanescu, S.; Raducanu, V.A.; Serban, N.; Cojocaru, E.M.; Campian, R.S. The Characterization of a Biodegradable Mg Alloy after Powder Bed Fusion with Laser Beam/Metal Processing for Custom Shaped Implants. Materials 2024, 17, 1682. Raducanu, D.; Cojocaru, V.D.; Nocivin, A.; Drob, S.I.; Hendea, R.E.; Stanciu, D.; Ivanescu, S.; Raducanu, V.A.; Serban, N.; Cojocaru, E.M.; Campian, R.S. The Characterization of a Biodegradable Mg Alloy after Powder Bed Fusion with Laser Beam/Metal Processing for Custom Shaped Implants. Materials 2024, 17, 1682.

Abstract

A new Mg-Zn-Zr-Ca alloy in powder state was obtained via mechanical alloying method, from pure elemental powder. Further, the obtained powder-alloy was processed by selective laser melting (SLM) procedure to obtain 3D printed samples for small biodegradable implants. A series of microstructural, mechanical and corrosion analysis were performed. The SEM analysis of powder-alloy reveal a good dimensional homogeneity, with uniform colored, no agglutinated and almost rounded particles, suitable for selective laser melting procedure. Further, the SLM samples reveal a robust and unbreakable morphology, with a suitable porosity and without undesirable balling effect. The tested Young’s modulus of the SLM samples, of 42 GPa, is close to cortical bone one, of 30 GPa. The corrosion tests performed in PBS (Phosphate-buffered saline) solution show that the corrosion parameters have a satisfactory evolution.

Keywords

Mg-alloys; mechanical alloying; selective laser melting; mechanical testing; corrosion resistance

Subject

Chemistry and Materials Science, Metals, Alloys and Metallurgy

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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