Experimental Evaluation of Graphene Loading Effects on Corrosion Protection Efficiency in Sustainable Marine Coatings

Vikramsinha V. Mane; Ramachandran Thulasiram; Ripendeep Singh; Sushil Chopade

doi:10.5750/ijme.v168iA3(S).1973

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Published: Oct 7, 2026

DOI: https://doi.org/10.5750/ijme.v168iA3(S).1973

Keywords:

Corrosion protection Graphene nanoplatelets XRD SEM

Vikramsinha V. Mane

Department of Mechanical Engineering, Terna Public Charitable Trust’s College of Engineering Osmanabad Solapur Road, Osmanabad, 413501, India

Ramachandran Thulasiram

Department of Mechanical Engineering, School of Engineering and Technology, JAIN (Deemed to be University), Bangalore, Karnataka, India

Ripendeep Singh

Department of Mechanical Engineering, Chandigarh University, Mohali, Punjab, India

Sushil Chopade

Department of Mechanical Engineering, Indira College of Engineering and Management, Pune, Maharashtra, India

Abstract

Marine structures are highly susceptible to corrosion in aggressive marine environments, which reduces service life
and reliability. This research experimentally investigates the effect of graphene nanoplatelet loading on the corrosion protection efficiency of bio-based marine coatings to identify the optimum reinforcement level. Graphene was uniformly dispersed into the coating matrix using high-shear mixing and applied to marine-grade steel substrates. The coatings were characterized using Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and contact angle analysis, while corrosion performance was evaluated using Electrochemical Impedance Spectroscopy (EIS), salt spray exposure, potentiodynamic polarization, immersion testing, and adhesion testing. Moderate graphene loading produced a compact, defect-free coating, whereas excessive loading caused agglomeration and reduced protection. The optimized coating achieved 96.8% corrosion protection efficiency and an impedance modulus of 1.92 × 10⁸ Ω·cm², confirming enhanced coating integrity, durability, electrochemical stability, and long-term sustainable marine corrosion protection.

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Vol. 168 No. A3(S) (2026): Special Issue - Smart and Sustainable Material for Marine Engineering Applications

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