Tuning of electrochemical and topographical characteristics for enhancement of anti-corrosion performance of hot-dip TiO2–Zn–(1 %)Al composite coatings

Effect of Y2O3 mass fraction on electrochemical corrosion performances of laser cladded CrNi coatings in 3.5% NaCl solution

“…The phase angles of CrNi-Y 2 O 3 coatings became larger with the increase of Y 2 O 3 mass fraction, suggesting that the stable, protective film was formed and the corrosion resistance of coatings was improved. In addition, the coating with a higher impedance modulus also had better corrosion resistance (Deepa et al, 2020). The impedance modulus jZj value at the low-frequency region was a response to the polarization resistance (Kong et al, 2021a(Kong et al, , 2021b.…”

Development of Antibacterial V/TiO2-Based Galvanic Coatings for Combating Biocorrosion

“…In this context, the present work aims to develop environment-friendly coatings with long durability, enhanced electrochemical properties, and long-term stability against biocorrosion. Zinc coating is widely applied as a metallic coating for corrosion prevention on mild steel substrates. , Due to high strength, formability, recyclability, long-term stability, and high anti-corrosion performance, hot-dip galvanized zinc coating is extensively used in all industrial and marine fields. , The superior anticorrosion performance and long-term stability of the zinc coating are due to the three-fold protective nature. , When the zinc coating has some defects and pores formed on its surface, then the coating acts as a sacrificial anode. , Modification of the zinc bath by alloying elements significantly affects the kinetics, surface morphology, and coating growth. , The presence of metal oxides such as ZrO 2 , Al 2 O 3 , TiO 2 , WO 3 , and CeO 2 in the zinc bath causes the formation of an oxide barrier coating and thereby enhances the anticorrosion performance of the interior layer of the coating. − ,− The main limitation of the zinc coating in the aquatic and marine environments is the bacterial adhesion and biofilm proliferation on the surface which enhance the anodic dissolution of the coating . Therefore, a coating with high antibacterial activity should inhibit bacterial adhesion and biofilm proliferation on the surface …”

“…1,3 Due to high strength, formability, recyclability, long-term stability, and high anticorrosion performance, hot-dip galvanized zinc coating is extensively used in all industrial and marine fields. 3,13 The superior anticorrosion performance and long-term stability of the zinc coating are due to the three-fold protective nature. 13,14 When the zinc coating has some defects and pores formed on its surface, then the coating acts as a sacrificial anode.…”

“…3,13 The superior anticorrosion performance and long-term stability of the zinc coating are due to the three-fold protective nature. 13,14 When the zinc coating has some defects and pores formed on its surface, then the coating acts as a sacrificial anode. 1,3 Modification of the zinc bath by alloying elements significantly affects the kinetics, surface morphology, and coating growth.…”

“…1,3 Modification of the zinc bath by alloying elements significantly affects the kinetics, surface morphology, and coating growth. 13,14 The presence of metal oxides such as ZrO 2 , Al 2 O 3 , TiO 2 , WO 3 , and CeO 2 in the zinc bath causes the formation of an oxide barrier coating and thereby enhances the anticorrosion performance of the interior layer of the coating. 1−3,13−15 The main limitation of the zinc coating in the aquatic and marine environments is the bacterial adhesion and biofilm proliferation on the surface which enhance the anodic dissolution of the coating.…”