Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1461333 | Ceramics International | 2014 | 5 Pages |
This paper focuses on the structure and corrosion behavior of 316L stainless steel coated by inorganic ZrO2, hybrid ZrO2–PMMA, and combined inorganic–hybrid films. The coatings were deposited by a particulate sol–gel spin-coating route, using carboxymethyl cellulose as a nanoparticle dispersant. The electrochemical evaluations were conducted in a simulated body fluid, via potentiodynamic polarization and impedance spectroscopic experiments. According to the results, the hybrid coating presented a better corrosion protection compared to the inorganic coating, due to a lesser density of structural defects. However, the best corrosion resistance was found for a combined coating which consists of an inorganic bottom layer and a hybrid top layer, due to a desirable compromise of good adhesion and low defect density.