Solvent Effect on the Anticorrosive Properties and Active Coating Area of a Long Alkyd Varnish

Authors

Saadawy M., Chemistry department Faculty of Science Alexandria university, Ibrahimia, P.O. Box 426, Alexandria 21321, Egypt;Follow
Abd-El-Nabey B.A., Chemistry department Faculty of Science Alexandria university, Ibrahimia, P.O. Box 426, Alexandria 21321, Egypt;
Gomaa A.Z., Quality Control & Inspection, Pachin Paint Company, Egypt;
Ashour M., International Group for Modern Coatings (Mido) Borg El Arab, Alexandria, Egypt.;

Corresponding Author

Saadawy M.(marwan.saadawy@yahoo.com)

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

DOI Link

https://doi.org/10.13208/j.electrochem.150922

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