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Enhanced Corrosion Protection of Mild Steel Using a Sn-Graphene Oxide Composite Coating
Filipe Dos Santos Vita1, Victor Magno Paiva1, Natasha Midori Suguihiro2
1Department of Inorganic Chemistry, Universidade Federal do Rio de Janeiro, Avenida Athos da Silveira Ramos, 149, Cidade Universitária, Rio de Janeiro 21941-909, Brazil.
ACS Omega
|June 8, 2026
Summary
Electrodeposited tin-graphene oxide (Sn-GO) composite coatings significantly enhance mild steel corrosion resistance. These advanced Sn-GO coatings offer superior protection compared to pure tin layers.
Area of Science:
- Materials Science
- Corrosion Engineering
- Electrochemistry
Background:
- Mild steel corrosion poses significant challenges in industrial applications.
- Tin-based coatings offer protective layers but require enhancement for superior performance.
- Graphene oxide (GO) presents potential for advanced composite materials due to its unique properties.
Purpose of the Study:
- To develop and optimize electrodeposited tin-graphene oxide (Sn-GO) composite coatings.
- To evaluate the corrosion resistance of Sn-GO coatings on mild steel.
- To investigate the influence of electrodeposition parameters on coating properties.
Main Methods:
- Graphene oxide synthesis and characterization using XRD and FTIR.
- Experimental design methodology for optimizing electrodeposition parameters (current density, GO concentration, deposition time).
- Electrochemical evaluation using Electrochemical Impedance Spectroscopy (EIS) and potentiodynamic polarization in 3.5% NaCl solution.
Main Results:
- Optimized Sn-GO coatings (0.125 g L-1 GO, 10.0 mA cm-2, 30 min) showed improved morphology.
- Sn-GO composite coatings exhibited significantly enhanced anticorrosive performance compared to pure tin.
- Charge transfer resistance increased from 3834 Ω cm2 (Sn) to 13149 Ω cm2 (Sn-GO).
Conclusions:
- Electrodeposition of Sn-GO composites is an effective method to improve corrosion resistance.
- Graphene oxide incorporation enhances the barrier properties of tin coatings.
- Sn-GO coatings show promise for industrial applications requiring superior corrosion protection.
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