Corrosion Protection of 316L SS by Cerium-Based Coatings: Effect of the Incorporation of Additives

Abstract

Interest in cerium-based coatings has increased in recent years due to their low toxicity, biocompatibility, and improved corrosion protection performance. The formation of a coating from a solution containing cerium nitrate (Ce(NO3)3) has been investigated as a good surface modification strategy for the production of protective coatings on 316L SS. The effect of various additives in the treatment solution (sodium molybdate, sodium salicylate, and ascorbic acid) on the corrosion protection properties of the coatings was evaluated. The protection performance of the coated samples in a physiological simulated fluid (Ringer solution) was examined by electrochemical methods. The composition and morphology of all coatings were analyzed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDX).