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<p>Pulse reverse electrodeposition of Ni-graphene nanocomposite coatings on aluminum LM26 alloy substrate was investigated. A significant impact of graphene and Ni particles on mechanical properties and surface morphology of the coating was witnessed. Noteworthily, microhardness was increased by 287.08%, i.e., ~ 2.87 times compared to the bare surface, while corrosion resistance increased by 19.80% due to the presence of graphene in the coating. A cauliflower layered surface morphology was observed in the samples. The corrosion rate after coating of Ni–Gr nanoparticles was estimated to be 2.45&#xa0;mpy. As such, by leveraging the unique properties of graphene and the control provided by the pulse reverse deposition technique, engineers can use the coatings developed in the present study for applications that require superior performance and durability in challenging environments. This combination of advanced materials and deposition techniques represents a significant advancement in materials science for corrosion protection applications with enhanced mechanical strength.</p>

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Ni-Graphene Nanocomposite Coated Aluminum LM26 Substrate: Investigation Summary on Microhardness, Wear, and Corrosion Resistance

  • 期刊论文

  • 发表日期：

    2025年6月14日

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  • Suresh Velayudham,
  • Elango Natarajan,
  • Kalaimani Markandan,
  • Gnanasambandam Anbuchezhiyan,
  • Gérald Franz,
  • Dhanesh G. Mohan

摘要

Pulse reverse electrodeposition of Ni-graphene nanocomposite coatings on aluminum LM26 alloy substrate was investigated. A significant impact of graphene and Ni particles on mechanical properties and surface morphology of the coating was witnessed. Noteworthily, microhardness was increased by 287.08%, i.e., ~ 2.87 times compared to the bare surface, while corrosion resistance increased by 19.80% due to the presence of graphene in the coating. A cauliflower layered surface morphology was observed in the samples. The corrosion rate after coating of Ni–Gr nanoparticles was estimated to be 2.45 mpy. As such, by leveraging the unique properties of graphene and the control provided by the pulse reverse deposition technique, engineers can use the coatings developed in the present study for applications that require superior performance and durability in challenging environments. This combination of advanced materials and deposition techniques represents a significant advancement in materials science for corrosion protection applications with enhanced mechanical strength.