Biodegradable Magnesium Alloys for Personalised Temporary Implants

• Published in: Journal of functional biomaterials 2023-07, Vol.14 (8), p.400
• Main Authors: Hendea, Radu Emil, Raducanu, Doina, Claver, Adrián, García, José Antonio, Cojocaru, Vasile Danut, Nocivin, Anna, Stanciu, Doina, Serban, Nicolae, Ivanescu, Steliana, Trisca-Rusu, Corneliu, Campian, Radu Septimiu
• Format: Article
• Language: English
• Subjects: 3D printing; Additive manufacturing; Alloys; Biocompatibility; Biodegradability; biodegradable magnesium alloy; Biodegradable materials; Biodegradation; Biomedical materials; Bones; Cancer; Compression; Compression tests; Corrosion; corrosion analysis; Corrosion and anti-corrosives; Corrosion resistance; Corrosion tests; Customization; Design; Diffraction; Geometry; Implants; Laser beam melting; laser powder bed fusion 3D additive manufacturing; Lasers; Magnesium; Magnesium alloys; Magnesium base alloys; Magnetic resonance imaging; Manufacturing; Mechanical alloying; mechanical analysis; Mechanical properties; microstructural analysis; Oncology, Experimental; Orthopedics; Powder metallurgy; Powders; Process parameters; Scanning electron microscopy; Specialty metals industry; Surgeons; Surgery; temporary personalised implants; Transplants & implants; X-ray diffraction; X-rays; Zinc; Zinc compounds
• ISSN: 2079-4983; 2079-4983
• DOI: 10.3390/jfb14080400

The objective of this experimental work was to examine and characterise the route for obtaining demonstrative temporary biodegradable personalised implants from the Mg alloy Mg-10Zn-0.5Zr-0.8Ca (wt.%). This studied Mg alloy was obtained in its powder state using the mechanical alloying method, with shape and size characteristics suitable for ensuing 3D additive manufacturing using the SLM (selective laser melting) procedure. The SLM procedure was applied to various processing parameters. All obtained samples were characterised microstructurally (using XRD—X-ray diffraction, and SEM—scanning electron microscopy); mechanically, by applying a compression test; and, finally, from a corrosion resistance viewpoint. Using the optimal test processing parameters, a few demonstrative temporary implants of small dimensions were made via the SLM method. Our conclusion is that mechanical alloying combined with SLM processing has good potential to manage 3D additive manufacturing for personalised temporary biodegradable implants of magnesium alloys. The compression tests show results closer to those of human bones compared to other potential metallic alloys. The applied corrosion test shows result comparable with that of the commercial magnesium alloy ZK60.