Engineering Corrosion Resistance in Magnesium Alloys for Biomedical Applications: A synergy of Zn/Ca atomic ratio & texture-based approach
Manisha Behera  1  , Cosmin Gruescu  1  , Rajashekhara Shabadi  1@  
1 : Unité Matériaux et Transformations - UMR 8207
Centrale Lille, Institut de Chimie - CNRS Chimie, Université de Lille, Centre National de la Recherche Scientifique, Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement

Magnesium (Mg) and Magnesium-Zinc-Calcium alloys present a compelling option for biodegradable implant materials. Utilizing the Vacuum Induction Casting, Mg-2.5Zn-xCa (with x=0.3, 0.5, 0.9, 1.15 wt%) alloys, were fabricated and subjected to hot-rolling for thermo-mechanical processing. The hot-rolled Mg-2.5Zn-0.3Ca alloy exhibits the lowest corrosion rate along with highest basal texture. Increasing the Zn/Ca atomic ratio intensifies the basal texture and enhances corrosion resistance. Elevated Zn concentration improves corrosion resistance via Ca2Mg6Zn3 phase formation, while increased Ca content diminishes corrosion resistance due to Mg2Ca phase. Advancement of this alloy is poised to extend Mg alloy use in innovative biomedical bone implants.


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