Synergistic Effect of Sn Doping in TiO 2 Nanoparticles as an Additive in Anti‐Corrosion Coatings

Corrosion is a major problem and protective coatings offer an effective solution. However, organic coatings are often associated with microcracks caused by the evaporation of solvents during coating preparation. This study investigates the use of titanium dioxide (TiO 2 ) nanoparticles as a coating...

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Bibliographic Details
Published in:Materials and corrosion 2024-10
Main Authors: Rahman, Fariza Abdul, Basirun, Wan Jefrey, Johan, Mohd Rafie
Format: Article
Language:English
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Summary:Corrosion is a major problem and protective coatings offer an effective solution. However, organic coatings are often associated with microcracks caused by the evaporation of solvents during coating preparation. This study investigates the use of titanium dioxide (TiO 2 ) nanoparticles as a coating additive to protect mild steel surfaces. Additionally, doping TiO 2 with tin (Sn) is believed to enhance its properties due to the reduced size of the nanoparticles. These nanoparticles were synthesised using the sol–gel method and subjected to various analyses. The coated mild steel samples were prepared using the dip‐coating method and immersed in 3.5 wt.% sodium chloride (NaCl) solution for 30 days. Electrochemical impedance spectroscopy (EIS) and Tafel polarisation showed that the Sn‐doped TiO 2 nanoparticles as an additive improved the corrosion resistance, as evidenced by a positive shift in corrosion potential ( E corr ) and reduced corrosion current density ( I corr ).
ISSN:0947-5117
1521-4176
DOI:10.1002/maco.202414492