Influence of cobalt, nickel and copper-based metal-organic frameworks on the corrosion protection of mild steel. (4th May 2017)

• Record Type: Journal Article
• Authors: Kumaraguru, S.; Pavulraj, R.; Mohan, S.
• Is Part Of: Transactions of the Institute of Metal Finishing. Volume 95:Number 3(2017)
• Page Start: 131
• Page End: 136
• Publication Date: 2017-05-04
• Subjects: Mild steel -- Organic coatings -- EIS -- Metal-organic frameworks -- Acid corrosion -- Paint coatings; Metals -- Finishing -- Periodicals; Metals -- Surfaces -- Periodicals; Metallurgy -- Periodicals; 671.705
• DOI: 10.1080/00202967.2017.1283898
• Languages: English
• ISSNs: 0020-2967

Abstract

Abstract : Three metal-organic frameworks (MOFs) were synthesised and their corrosion prevention behaviour was evaluated. Trimesic acid was used as a ligand to synthesis cobalt, nickel and copper-based MOFs in a mixture of solvents. MOFs were characterised by X-ray diffraction, FT-IR spectroscopy and thermogravimetric analysis. FE-SEM images of Ni-MOF and Cu-MOF showed one-dimensional nanorods, and foam-like morphology respectively. That of Co-MOF displayed large chunky particles with etched edges, and of non-uniform size and shape. The corrosion behaviour of MOF pigmented paint coated on mild steel was studied in 3.5% NaCl and 0.1 N HCl solutions using electrochemical impedance spectroscopy (EIS). In both solutions, Ni-MOF exhibited higher corrosion resistance than the Co-MOF and Cu-MOF.