Influence of deposition parameters on the behavior of nitro-cobalt-based and Ti-hexafluoride-based pretreatments

Complementary corrosion protection of cast AlSi7Mg0.3 alloy using Zr-Cr conversion and polyacrylic/siloxane-silica multilayer coatings

“…In the case of Zr, a general hydrolysis model for mononuclear and polynuclear Zr-species can be presented as reaction (11) 71 :…”

“…Over the last few decades, many research studies in corrosion protection have focused on developing effective coatings to replace environmentally hazardous chromate conversion coatings containing chromium(VI) [5][6][7][8] . In the last twenty years, various environmentally acceptable and efficient corrosion protective conversion coating systems based on manganese 9,10 , titanium 11,12 , cerium [13][14][15][16] , trivalent chromium process (TCP) [17][18][19][20] , and zirconium 12,[21][22][23][24][25][26][27][28][29][30] have been investigated. The zirconiumbased coatings (ZrCCs) are already commercialised 12 .…”

Exploring the Role of Passivating Conversion Coatings in Enhancing the Durability of Organic-Coated Steel Against Filiform Corrosion Using an Electrochemical Simulated Approach

“…In this work, a common corrosion mitigation technique, known as surface conversion, was examined against FFC. Surface conversion is a frequently employed method within the domain of protective coatings, predominantly utilized to augment substrate compatibility prior to coating application [13][14][15][16][17][18][19][20][21][22][23][24]. Once the metal is properly cleaned, an application of a thin, insoluble, and well-adherent layer can beneficially modify the surface characteristic.…”

Study of ZnAl Hydroxides-Based Thin Films to Enhance the Filiform Corrosion Resistance of Acrylic-Coated AA5005

“…Thus, thinner layers that closely resemble the characteristics of conventional conversion films were produced. [38][39][40] In particular, we synthesized Zn-Al hydroxides-based chemical conversion treatments to enhance the FFC resistance of painted AA5005. We evaluated the impact of synthesis conditions on LDH layers and established correlations between electrochemical responses, anodic polarization curves, and Electrochemical Impedance Spectroscopy (EIS), and structural features investigated using X-ray Diffraction (XRD) and Fourier Transformed Infrared Spectroscopy (FT-IR).…”