Corrosion investigation of hydroxyapatite/chitosan/glutaraldehyde hybridcoating on AZ۳۱ magnesium

A hybrid coating consisting of hydroxyapatite (HA), chitosan (Ch), and glutaraldehyde (GA) wasprepared by immersion method on AZ۳۱ Mg substrates. The hybrid coating on the Mg AZ۳۱ wascreated by adding Ch/GA directly to HA solution at various ratios of ۱:۵, ۱:۱۰, ۱:۱۵ and ۱:۲۰,respectively. The corrosion behavior and surface characteristics of the coated samples were examinedusing EIS, SEM, and EDS, respectively. Anti-corrosion performance of the prepared coatings wasassessed in sodium chloride ۳.۵ wt% solution. The electrochemical results indicate that theHA/Ch/GA coating, with Ch/GA ratio of ۱:۱۰, has the best anti-corrosion performance and themaximum polarization resistance.

کلیدواژه ها:

Polymeric coatings ، Corrosion ، Hydroxyapatite ، Chitosan ، Mg AZ۳۱