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Electrochemical impedance tests were applied to steel specimens which were coated by epoxy and tested after immersion in Dead Sea water for different periods at room temperature and at 50C. Results taken from Nyquist and Bode plots and as were analyzed by means of software provided with the instrument. Results were presented as the values of capacitance and resistance Cdl and Rct. Results show that degradation occurred after immersion in the test solution, and were more severe at higher temperature. Specimens were examined under scanning electron microscope, and micrographs showed clear rupture and degradation in epoxy coatings.

KEYWORDS

Electrochemical impedance spectroscopy, epoxy, Dead Sea water, coatings.

Cite this paper

S. Masadeh -Electrochemical Impedance Spectroscopy Of Epoxy-Coated Steel Exposed To Dead Sea Water,- Journal of Minerals and Materials Characterization and Engineering, Vol. 4 No. 2, 2005, pp. 75-84. doi: 10.4236-jmmce.2005.42007.





Autor: Sami Masadeh

Fuente: http://www.scirp.org/



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