Journal
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING
Volume 95, Issue 3, Pages 131-136Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00202967.2017.1283898
Keywords
Mild steel; Organic coatings; EIS; Metal-organic frameworks; Acid corrosion; Paint coatings
Categories
Funding
- Council of Scientific and Industrial Research (CSIR) [9/1/PS/CEERI (1)/2012-13-PPD, PSC-0101]
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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, FTIR 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.
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