Journal of Coating Technology and Innovation

ABSTRACT

A durable nanocomposite film made of Al₂O₃ and siloxane, 30 µm thick with a water contact angle of 151°, was created on low carbon steel using electrophoretic deposition (EPD), then dip-coated in methyl hydrogen polysiloxane (KF-99) and cured at 140°C for 2 hours. The coating showed impressive resistance to corrosion, increasing the corrosion potential (E_corr) from -930 to -498 mV and decreasing the corrosion current (I_corr) from 120.22 to 1.122 μA/cm². Furthermore, there was a significant increase in the charge transfer resistance (Rct) from 10.84 to 8.7 x 10⁶ Ω. These enhancements achieve an impressive 99.1% efficiency in inhibiting corrosion. The coating showed stability up to 750°C, while achieving a corrosion inhibition efficiency of 98.3%.

Article History

KEYWORDS

1. Al₂O₃-siloxane nanocomposite coating
2. Low carbon steel
3. Electrophoretic deposition
4. Superhydrophobic
5. Corrosion resistance
6. High temperature stability