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This research has been accomplished using the advanced selective laser melting (SLM) technique as well as HIP post-treatment in order to improve mechanical properties and biocompatibility of Mg– Ca–Sr alloy. Through this research it becomes clearly noticeable that the Mg–1.5Ca–xSr (x = 0.6, 2.1, 2.5) alloys with Sr exhibited better mechanical properties and corrosion potentials. This is more particular with the Mg–1.5Ca–2.5Sr alloy after HIP post-treatment allowing it to provide a desired combination of degradation and mechanical behavior for orthopedic fracture fixation during a desired treatment period. In vivo trials, there was a clear indication and exhibition that this Mg–1.5Ca–2.5Sr alloy screw can completely dissolve in miniature pig’s body which leads to an acceleration in growth of bone tissues. Mg–Ca–Sr alloy proved potential candidate for use in orthopedic fixation devices through Our results concluded that Mg–Ca–Sr alloy are potential candidate for use in orthopedic fixation devices through mechanical strength and biocompatibility evaluations (in vitro or In vivo).

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This study focuses on the corrosion resistance of Cobalt–Chromium (Co–Cr) alloy coated with Silver/Zirconium (Ag/Zr) nanocomposite coatings, using plasma spraying. The Ag/Zr nanocomposite materials are processed into nanoparticles with a range of diameters from 22 μm to 58 μm, because small particle size increases the adhesion between the anti-corrosion Ag/Zr nanocomposite coating and the Co–Cr alloy substrate, which can prevent oxygen from penetrating into the Co–Cr alloy substrate. The samples of Ag/Zr nanocomposite coating effectively diminished the number of microholes and cracks, as well as preserved the substrate's flexibility. We recommend using the Ag8Zr2 coating for medical applications because it had the highest corrosion resistance of all the samples we tested.