Electrochemical Evaluation of Hydrotalcite Mg /Al with Caffeine in the Protection in AZ31 Alloy

Abstract

The present work is an electrochemical evaluation of hydrotalcite Mg/Al impregnated with caffeine for the protection of the AZ31 alloy, where different concentrations of the inhibitor were evaluated to determine the best result in order to be applied as a coating in orthopedic uses. The efficiency of the hydrotalcite coating as a function of concentration was determined using electrochemical impedance spectroscopy and it was shown that HT MgAl with 5 ppm perezone impregnated achieved 99% inhibition efficiency.