TY - JOUR
T1 - A study of the effects of filler particles on the degradation mechanisms of powder epoxy novolac coating systems under corrosion and erosion
AU - Wang, Dailin
AU - Sikora, Elzbieta
AU - Shaw, Barbara
N1 - Funding Information:
The work was supported by the National Priority Research Fund (NPRP) award [No. 5-502-2-200] from the Qatar National Research Fund (a member of The Qatar Foundation). We also acknowledge the support from coating supplier NOV Tuboscope™ company.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/8
Y1 - 2018/8
N2 - Electrochemical impedance spectroscopy (EIS) tests were conducted on powder epoxy novolac (PEN) coating systems with different loadings and types of filler particles. The performance of the coatings was examined in an aqueous corrosive environment with a chloride concentration of 2000 ppm, pH of 3.5, temperature of 60 °C, and saturated with carbon dioxide (CO2). The coating's performance under the influence of grit blast erosion was also studied. Equivalent circuit models were proposed to study the degradation mechanisms of the coating systems under the synergic effect of corrosion and erosion. Coating systems with a low amount of filler particles provided the best protection against corrosion in the testing environment, while systems with an increased amount filler particles provided the best erosion resistance. Platy shaped filler particles were found to be the best in reinforcing coating's resistance against both corrosion and erosion.
AB - Electrochemical impedance spectroscopy (EIS) tests were conducted on powder epoxy novolac (PEN) coating systems with different loadings and types of filler particles. The performance of the coatings was examined in an aqueous corrosive environment with a chloride concentration of 2000 ppm, pH of 3.5, temperature of 60 °C, and saturated with carbon dioxide (CO2). The coating's performance under the influence of grit blast erosion was also studied. Equivalent circuit models were proposed to study the degradation mechanisms of the coating systems under the synergic effect of corrosion and erosion. Coating systems with a low amount of filler particles provided the best protection against corrosion in the testing environment, while systems with an increased amount filler particles provided the best erosion resistance. Platy shaped filler particles were found to be the best in reinforcing coating's resistance against both corrosion and erosion.
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U2 - 10.1016/j.porgcoat.2018.04.026
DO - 10.1016/j.porgcoat.2018.04.026
M3 - Article
AN - SCOPUS:85046339055
SN - 0300-9440
VL - 121
SP - 97
EP - 104
JO - Progress in Organic Coatings
JF - Progress in Organic Coatings
ER -