Deconstructing in-vitro corrosion of pure Mg: Influence of serum biomolecules and phosphate ions

Anomalies have been reported between bio-corrosion rates of Mg alloys determined in in-vitro and in-vivo environments. In-vivo environments contain serum biomolecules together with inorganic ions, while typically used for testing may or not include bio-molecules. In-vitro corrosion on pure a series electrolyte compositions has identified the influence different biomolecular species Mg. Electrochemical analyses electron microscopy indicate that bio-molecules tend to accelerate Mg, phosphate ions synergy calcium inhibit corrosion. However, concentrations > 30 vol. % test media lead decreased This indicates variations seen could be attributed differences respective media.