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<p>Corrosion significantly impacts the automotive industry by reducing the structural integrity and lifespan of vehicle components, particularly those made of steel and aluminum. Conventional coatings—such as galvanization, electrodeposition, and polymer-based systems—often fail to provide long-term protection under harsh environmental conditions. This review explores recent advances in graphene-based nanocomposite coatings as next-generation anticorrosion solutions for automotive applications. Graphene and its derivatives, including graphene oxide (GO) and reduced graphene oxide (rGO), exhibit exceptional barrier properties, high mechanical strength, chemical stability, and electrical conductivity. These materials enhance the performance of hybrid coatings—such as polymer/graphene, metal oxide/graphene, and ceramic/graphene systems—by improving impermeability, adhesion, and electrochemical resistance. The review examines fabrication methods (e.g., exfoliation, CVD, chemical reduction), functionalization strategies for dispersion, and protective mechanisms such as self-healing and passivation. Comparative data from electrochemical impedance spectroscopy (EIS) and salt spray tests confirm the superior corrosion resistance of graphene-based coatings over traditional alternatives. The integration of smart features like IoT-enabled sensing and superhydrophobicity further broadens their application potential. While challenges related to scalability, cost, and environmental impact remain, this review identifies key pathways for developing sustainable, multifunctional coatings tailored to the demands of modern automotive engineering.</p>

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Recent Advances in Graphene-Based Nanocomposite Coatings for Corrosion Resistance in the Automotive Industry and Their Smart Functional Applications

  • 期刊论文

  • 发表日期：

    2025年9月9日

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  • R. Priyadharshini,
  • Joseph Raj Xavier

摘要

Corrosion significantly impacts the automotive industry by reducing the structural integrity and lifespan of vehicle components, particularly those made of steel and aluminum. Conventional coatings—such as galvanization, electrodeposition, and polymer-based systems—often fail to provide long-term protection under harsh environmental conditions. This review explores recent advances in graphene-based nanocomposite coatings as next-generation anticorrosion solutions for automotive applications. Graphene and its derivatives, including graphene oxide (GO) and reduced graphene oxide (rGO), exhibit exceptional barrier properties, high mechanical strength, chemical stability, and electrical conductivity. These materials enhance the performance of hybrid coatings—such as polymer/graphene, metal oxide/graphene, and ceramic/graphene systems—by improving impermeability, adhesion, and electrochemical resistance. The review examines fabrication methods (e.g., exfoliation, CVD, chemical reduction), functionalization strategies for dispersion, and protective mechanisms such as self-healing and passivation. Comparative data from electrochemical impedance spectroscopy (EIS) and salt spray tests confirm the superior corrosion resistance of graphene-based coatings over traditional alternatives. The integration of smart features like IoT-enabled sensing and superhydrophobicity further broadens their application potential. While challenges related to scalability, cost, and environmental impact remain, this review identifies key pathways for developing sustainable, multifunctional coatings tailored to the demands of modern automotive engineering.