Evaluation the Corrosion Behavior of Mg Alloy AZ۹۱ with Polymer CoatingReinforced Baghdadite Nano-Particles for Using as Bone Implant

The main objective of the present study was to apply a polymer coating made of Polycaprolactone/chitosan (PCL/Ch) /۱%wt. Baghdadite to an anodized AZ۹۱ alloy through the immersion method in an attempt to improve these alloy's resistance to corrosion, bioactivity, and biocompatibility. The results of the corrosion test were indicative of an improvement in the corrosion resistance and a ۱۰۳-fold decrease in the corrosion current density of the anodized AZ۹۱ alloy as a result of applying the polymer-ceramic coating. Moreover, applied the polymer-ceramic coating increased the roughness of AZ۹۱ from ۰.۳۲۹ ± ۰.۰۲ to ۷.۷۹۲ ± ۰.۳۴ μm. Simulated body fluid (SBF) was used to evaluate the apatite formation ability of the samples. The results showed the formation of an apatite layer on the sample surface which can be considered as a bioactivity criterion.

کلیدواژه ها:

Polymer Coating ، Mg alloy ، Baghdadite ، Bioactivity ، Corrosion ، Simulated Body fluid ، پوشش پلیمری ، آلیاژ منیزیم ، بغدادیت.