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Efficient anti-corrosive coating of cold-rolled steel in a seawater environment using an oil-based graphene oxide ink†

IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur


Field	Value

Title	Efficient anti-corrosive coating of cold-rolled steel in a seawater environment using an oil-based graphene oxide ink†

Creator	Singhbabu, Y N Sivakumar, B Singh, J K Bapari, H Pramanick, A K Sahu, Ranjan K

Subject	Materials Science Metallurgy

Description	We report the production of an efficient anti-corrosive coating of cold-rolled (CR) steel in a seawater environment (∼3.5 wt% NaCl aqueous solution) using an oil-based graphene oxide ink. The graphene oxide was produced by heating Aeschynomene aspera plant as a carbon source at 1600 °C in an argon atmosphere. The ink was prepared by cup-milling the mixture of graphene oxide and sunflower oil for 10 min. The coating of ink on the CR steel was made using the dip-coating method, followed by curing at 350 °C for 10 min in air atmosphere. The results of the potentiodynamic polarization show that the corrosion rate of bare CR steel decreases nearly 10 000-fold by the ink coating. Furthermore, the salt spray test results show that the red rusting in the ink-coated CR steel is initiated after 100 h, in contrast to 24 h and 6 h in the case of oil-coated and bare CR steel, respectively. The significant decrease in the corrosion rate by the ink-coating is discussed based on the impermeability of graphene oxide to the corrosive ions.

Publisher	NCBI

Date	2015

Type	Article PeerReviewed

Format	application/pdf

Identifier	http://eprints.nmlindia.org/7228/1/YNSinghbabu-2015-2-Nanoscale.pdf Singhbabu, Y N and Sivakumar, B and Singh, J K and Bapari, H and Pramanick, A K and Sahu, Ranjan K (2015) Efficient anti-corrosive coating of cold-rolled steel in a seawater environment using an oil-based graphene oxide ink†. Nanoscale, 7 (7.760). pp. 8035-8047.

Relation	http://pubs.rsc.org/en/Content/ArticleLanding/2015/NR/c5nr01453k http://eprints.nmlindia.org/7228/