Corrosion protection of mesoporous bioactive glass coating on biodegradable magnesium

A mesoporous bioactive glass (MBG) coating was synthesized and coated on pure Mg substrate using a sol-gel dip-coating method. The MBG coating uniformly covered the Mg substrate with a thickness of ∼1.5 μm. Electrochemical and immersion tests were performed in order to investigate the biodegradation performance of Mg with and without different surface coatings in simulated body fluids (SBF) at 37 °C. Results revealed that the MBG coated Mg displayed a significantly lower biodegradation rate, in comparison with normal bioactive glass (BG) coated and uncoated Mg samples.