Work

Impact of Different Parameters to Enhanced Corrosion Resistance of Zinc-PVDF-G Coating for the Protection of Mild Steel Substrates

Year: 2025

Type: article

Abstract: This study investigates the corrosion resistance of zinc-PVDF-graphene (zinc-PVDF-G) coatings on mild steel substrates. Coatings with varying graphene concentrations were prepared using electrochemical deposition for zinc, followed by brush coating of PVDF-graphene. Central composite design (CCD) of response surface methodology (RSM) was employed to optimise the coating composition, and high R2 values confirmed the reliability of the models. Characterisation using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transmission spectroscopy (FTIR) demonstrated uniform coating morphology and strong adhesion. The inclusion of 0.9% graphene in PVDF significantly enhanced corrosion resistance, with the P3-coated sample achieving a barrier performance of 5.24 × 106 Ω·cm2, an OCP of −0.563 V, and a protection efficiency that improved by approximately 61.6% compared to graphene-free coatings. These results indicate that graphene effectively reinforces the PVDF matrix, reduces diffusion of corrosive species, and provides superior long-term stability, demonstrating the potential of zinc–PVDF-G coatings for high-performance corrosion protection.

Source: Polymers

DOI: 10.3390/polym17212914

Authors: Saba Ayub, Bashar S. Mohammed, Ahmad Mahamad Al-Yacouby, Naraindas Bheel

Institution: Universiti Teknologi Petronas

Language: English

Topic: Corrosion Behavior and Inhibition

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,258

Funders: Universiti Teknologi Petronas, Malaysia-Thailand Joint Authority