National Institute of Technology, Rourkela

राष्ट्रीय प्रौद्योगिकी संस्थान, राउरकेला

ଜାତୀୟ ପ୍ରଯୁକ୍ତି ପ୍ରତିଷ୍ଠାନ ରାଉରକେଲା

An Institute of National Importance

Seminar Details

Seminar Title:
Commercial synthesis of graphene by electrochemical exfoliation technique and its exploration as an anti-corrosion coating material for structural components
Seminar Type:
Synopsis Seminar
Department:
Metallurgical and Materials Engineering
Speaker Name:
Deepak Kumar Sahu ( Rollno : 519mm6006)
Speaker Type:
Student
Venue:
UG Class Room (MS214)
Date and Time:
11 Jul 2024 11 AM
Contact:
Prof. Archana Mallik
Abstract:

The current study explores the possibility of graphene as a protective layer on the structural components as zinc and mild steel 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 for the synthesis of graphene. The exfoliated graphene nano-sheets were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, UV-visible, Transmission electron microscope (TEM), Thermogravimetric analysis (TGA), and field emission scanning electron microscope to evaluate its properties. The three different synthesized forms of graphene nano-sheets were electrophoretically deposited onto Zn and mild steel substrates at two different potentials. Scratch testing was employed to check the adhesion quality of the coatings. The corrosion behaviour of bare and graphene-coated substrates was studied in borate buffer and 3.5 wt% NaCl solutions through potentio-dynamic polarization and electrochemical impedance spectroscopy. It was observed that graphene synthesized from H2SO4 exhibited superior anti-corrosion properties in comparison to others.