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Synthesis and development of a highly adhesive graphene coating to improve the corrosion resistance of zinc in aggressive environment

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(1), pp.247-263
  • DOI : 10.1007/s42823-023-00623-y
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : June 30, 2023
  • Accepted : September 25, 2023
  • Published : February 1, 2024

Sahu Deepak Kumar 1 Das Amlan 1 Das Sanjeev 2 Mallik Archana 1

1Electrometallurgy and Corrosion Laboratory, Department of Metallurgical and Materials Engineering, National Institute of Technology
2Advanced Metal Casting Laboratory, National Institute of Technology

Accredited

ABSTRACT

The current study explores the possibility of graphene as a protective layer on the zinc substrate through an optimized electrophoretic deposition process. Graphene has been synthesized from H2SO4, HNO3, and HClO4 solutions by an electrochemical exfoliation route. This method is known for providing a scalable and economical approach to the synthesis of graphene. The exfoliated graphene nano-sheets were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, UV–visible, and field emission scanning electron microscope to evaluate its properties. The three different synthesized forms of graphene nano-sheets were electrophoretically deposited onto Zn substrates at two different potentials. Scratch testing was employed to check the adhesion quality of the coatings. The corrosion behaviour of Zn and graphene-coated Zn substrates was studied in borate buffer and 3.5 wt% NaCl solutions through potentiodynamic polarization and electrochemical impedance spectroscopy. It was observed that graphene synthesized from H2SO4 exhibited superior anti-corrosion properties in comparison to others.

Citation status

Scopus Citation Counts (1) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

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