Effect of Rare Earth Oxide Nanoparticles on the Mechanical and Biological Properties of Magnesium




Abstract: As a lightweight metal, magnesium is targeted in automobile and aerospace industries owing to excellent weight reduction and structural efficiency. Further, magnesium has favorable mechanical properties, low elastic modulus, superior biocompatibility and biodegradability that helps in bone repair and bone formation which is a necessity for implants. Magnesium corrodes easily, and so would affect the rate of tissue healing, hence controlling the corrosion rate is a priority to make it usable. Thus, combining both the mechanical and corrosion properties of magnesium can help it perform as temporary implants for load-bearing applications. The objective of this study was to develop non-toxic magnesium-based nanocomposites incorporating rare earth oxides (REOs) synthesized by powder metallurgy technique followed by microwave sintering. The role of 1.0 vol. % of samarium oxide (Sm2O3) and ceria (CeO2) nanoparticles on the microstructure, compressive, immersion and cytotoxic studies of pure Mg are discussed for wide spectrum of applications.

Authors: Milli Suchita Kujur, Vyasaraj Manakari, Gururaj Parande, Somasundaram Prasadh, Raymond Wong, Ashis Mallick, and Manoj Gupta

Keywords: Magnesium; Rare earth oxide; Mechanical; Corrosion; Cytotoxicity

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9 pages


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