Abstract
The effects of solvent nature and composition on the anticorrosive properties of a long alkyd varnish after different days of immersion in 0.5 mol•L-1 NaCl were studied using electrochemical impedance spectroscopy. The protection efficiencies of the long alkyd varnishes containing different solvents increased with increasing the volatility of solvent or the composition of a given volatile solvent, which was confirmed with the observations using scanning electron microscopy and energy-dispersive X-Ray spectroscopy. The delaminated area, the area where the organic coating is detached from the metal surface leaving it unprotected, was found to decrease by increasing the volatility of solvent.
Graphical Abstract
Keywords
metals, coatings, electrochemical techniques
Publication Date
2016-08-29
Online Available Date
2015-12-25
Revised Date
2015-11-26
Received Date
2015-09-22
Recommended Citation
Saadawy M., Abd-El-Nabey B.A., Gomaa A.Z., Ashour M..
Solvent Effect on the Anticorrosive Properties and Active Coating Area of a Long Alkyd Varnish[J]. Journal of Electrochemistry,
2016
,
22(4): 417-424.
DOI: 10.13208/j.electrochem.150922
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol22/iss4/8
References
[1] Duraibabu D, Ganeshbabu T, Manjumeena R, et al. Unique coating formulation for corrosion and microbial prevention of mild steel, Prog. Org. Coat., In Press.
[2] Chambers L D, Wharton J A, Wood R J K, et al. Techniques for the measurement of natural product incorporation into an antifouling coating. Prog. Org. Coat., 2014, 77: 473-484.
[3] Mostafaei A, Nasirpouri F. Epoxy/polyanilineZnO nanorods hybrid nanocomposite coatings: Synthesis, characterization and corrosion protection performance of conducting paints. Prog. Org. Coat., 2014, 77: 146-159.
[4] Zhou C, Lu X, Xin Z, et al. Polybenzoxazine/SiO2 nanocomposite coatings for corrosion protection of mild steel. Corros. Sci., 2014, 80: 269-275.
[5] Appa Rao B V, Reddy M N, Sreedhar B. Self-assembled 1-octadecyl-1H-1,2,4-triazole films on copper for corrosion protection. Prog. Org. Coat., 2014, 77: 202-212.
[6] Sriraman K R, Brahimi S, Szpunar J A, et al. Characterization of corrosion resistance of electrodeposited ZnNi Zn and Cd coatings. Electrochim. Acta., 2013, 105: 314-323.
[7] ?ivkovi? L S, Jegdi? B V, Popi? J P, et al. The influence of Ce-based coatings as pretreatments on corrosion stability of top powder polyester coating on AA6060. Prog. Org. Coat., 2013, 76: 1387-1395.
[8] Mansour E M E, Abdel-Gaber A M, Abd-El Nabey B A, et al. Solvent effect on the protection efficiency of vinyl resin varnish for preventing the corrosion of steel using electrochemical impedance spectroscopy. Corrosion, 2002, 58: 113118.
[9] Tippo T, Thanachayanont C, Muthitamongkol P, et al. The effects of solvents on the properties of ultra-thin poly (methyl methacrylate) films prepared by spin coating. Thin Solid Films, 2013, 546: 180-184.
[10] Kohl M, Kalendová A, Stejskal J. The effect of polyaniline phosphate on mechanical and corrosive properties of protective organic coatings containing high amounts of zinc metal particles. Prog. Org. Coat., 2014, 77: 512-517.
[11] Millet F, Auvergne R, Caillol S, et al. Improvement of corrosion protection of steel by incorporation of a new phosphonated fatty acid in a phosphorus-containing polymer coating obtained by UV curing. Prog. Org. Coat., 2014, 77: 285-291.
[12] Mansour E M E, Abdel-Gaber A M, Abd-El Nabey B A, et al. Developping and Testing of a New Anticorrosive Coating Containing Algae as a Natural Inhibitor for Preventing Marine Corrosion of Steel. Corrosion, 2003, 59: 242-249.
[13] Abdel-Gaber A M, Abd-El Nabey B A, Khamis E, et al. Influence of natural inhibitor, pigment and extender on corrosion of polymer-coated steel. Prog. Org. Coat., 2010, 69: 402-409.
[14] Foxton J .Surface coating. Third edition. London, UK, 1993. 1.
[15] Holmberg K. High Solids Alkyd Resins. Marcel Dekker, New York, 1988.
[16] Brasher D, Nurse T J. Electrical measurements of immersed paint coatings on metal. II. Effect of osmotic pressure and ionic concentration of solution on paint breakdown. J. Appl. Chem., 1959, 9: 96-106.
[17] Kendig M W, Mansfeld F, Tsai S. Determination of the long term corrosion behavior of coated steel with A.C. impedance measurements. Corros. Sci., 1983, 23: 317-329.
[18] Hack H P, Scully J R. Defect area determination of organic coated steels in sea water using the breakpoint frequency method. J. Electrochem. Soc. 1991, 138 (1): 33-40.
[19] Kendig M W, Scully J. Basic aspects of electrochemical impedance application for the life prediction of organic coatings on metals. Corrosion, 1990, 46 (1): 22-29.
[20] Virtanen S, Ives M B, Sproule G I, et al. A surface analytical and electrochemical study on the role of cerium in the chemical surface treatment of stainless steels. Corros. Sci., 1997, 39: 1897-1913.
[21] Haruyama S, Asari M, Tsuru T. Corrosion protection by organic coatings. Kendig M, Leidhaiser H, eds. Proc. Pennington, NJ: Electrochemical Society [ECS], 1987, 78(2): 197-207.
[22] Deflorian F, Fedrizzi L, Bonora P L. Determination of the reactive area of organic coated metals using the breakpoint method. Corrosion, 1994, 50(2): 113-119.
