Magnesium and its alloys have attracted considerable attention in recent years due to their suitable physical, mechanical, and biological properties for biomedical applications. These properties include a high strength-to-weight ratio, low elastic modulus, biodegradability, and non-toxicity to the human body. However, the excessively high biodegradation rate of magnesium, resulting from its low corrosion resistance, has limited its application as an implant material. Fabrication of composites to enhance strength, as well as alloying and surface modification to improve corrosion resistance, are among the main approaches proposed to overcome this limitation. In this study, Mg–Baghdadite–ZnO composites were synthesized using the powder metallurgy method. The effects of reinforcing nanoparticles, zinc oxide content, and its ratio to Baghdadite bioceramic nanoparticles on microstructure, mechanical properties, corrosion behavior, and wettability were investigated. Samples with compositions of pure Mg, Mg–10 wt.%Baghdadite, and Mg–10 wt.%Baghdadite–8 wt.%ZnO were prepared and pressed into 1 g and 2 g discs under a load of 28,000 N (approximately 5 tons). The results showed that the addition of 10 wt.% Baghdadite significantly improved the mechanical properties, while increasing ZnO content enhanced corrosion resistance.
Amini et al. (Thu,) studied this question.