Structural Characterization of Mg-0.5Ca-xY Biodegradable Alloys

Abstract:

In recent years, researchers have been able to identify new materials with special properties that can be used in major medical fields. Magnesium-based materials used in orthopedics are an important alternative, being the third generation of biocompatible materials. A biodegradable magnesium-based material has the ability to degrade at a certain rate, is biocompatible, and together with other alloying elements ensures osteointegration. Mg-0.5Ca-xY biodegradable alloys will be developed in an induction melting furnace using ceramic crucibles, melting at 710-720 °C in the controlled atmosphere of 5.0 Ar. SEM analyses and X-ray diffraction reveals the size distribution of Mg-sized grains, with a hexagonal lattice and formation of compounds with the two alloying elements: Mg₂Ca, Mg₂Y, Mg₂₄Y₅ uniformly arranged in the α-Mg matrix. The alloying elements influence the microstructure, the size of the α-Mg grains decreasing considerably.

• Periodical: Key Engineering Materials (Volume 782)
• Pages: 129-135
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.782.129
• Online since: October 2018
• Authors: Bogdan Istrate, Corneliu Munteanu*, Ștefan Lupescu, Iulian Antoniac, Eusebiu Sindilar
• Keywords: EDS, Mg-0.5Ca-xY Biodegradable Alloys, SEM, XRD

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