Evaluation of thick organic coatings degradation in seawater using cathodic protection and thermally accelerated tests

Touzain, S.; Thu, Quy Le; Bonnet, Gilles

doi:10.1016/j.porgcoat.2004.09.007

Cited by 83 publications

(29 citation statements)

References 15 publications

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“…To simplify the data analysis, the low-frequency impedance (Z lf ) is employed to directly evaluate the corrosion performance of coated samples [40][41][42]. Z lf of samples coated with pure epoxy coatings (curve 1, Fig.…”

Section: Eismentioning

confidence: 99%

Silane-incorporated epoxy coatings on aluminum alloy (AA2024). Part 1: Improved corrosion performance

Jiang

et al. 2015

Corrosion Science

154

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Section: Eismentioning

confidence: 99%

Silane-incorporated epoxy coatings on aluminum alloy (AA2024). Part 1: Improved corrosion performance

Jiang

et al. 2015

Corrosion Science

154

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“…[13][14][15][16][17] Fig. 6 shows EIS spectrum measured for the unmodified polyurethane coated on steel as a function of time in immersion test.…”

Section: Effects Of Modifier On Corrosion Protectiveness From the Eismentioning

confidence: 99%

Effects of surface modification with hydroxyl terminated polydimethylsiloxane on the corrosion protection of polyurethane coating

Jeon¹,

Shon²

2014

Corrosion Science and Technology

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Polyurethane coating was designed to give a hydrophobic property on its surface by modifying it with hydroxyl terminated polydimethylsiloxane and then effects of surface hydrophobic tendency, water transport behavior and hence corrosion protectiveness of the modified polyurethane coating were examined using FT-IR/ATR spectroscopy, contact angle measurement and electrochemical impedance test. As results, the surface of polyurethane coating was changed from hydrophilic to hydrophobic property due primarily to a phase separation tendency between polyurethane and modifier by the modification. The phase separation tendency is more appreciable when modified by polydimethylsiloxane with higher content. Water transport behavior of the modified polyurethane coating decreased more in that with higher hydrophobic surface property. The decrease in the impedance modulus |Z| at low frequency region in immersion test for polyurethane coatings was associated with the water transport behavior and surface hydrophobic properties of modified polyurethane coatings. The corrosion protectiveness of the modified polyurethane coated carbon steel generally increased with an increase in the modifier content, confirming that corrosion protectiveness of the modified polyurethane coating is well agreed with its water transport behavior.

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“…[6][7][8][9][10] However, in case of very thick organic coatings, it takes a long time to detect any significant sign of corrosion 11 ; as a result, a significant portion of the previous studies was devoted to the evaluation of thin coatings. 12, 13 Murray 14 studied the behavior of thick films of polyurethane coatings, up to 7140-lm thickness.…”

Section: Introductionmentioning

confidence: 99%

Evaluating water transport through high solid polyurethane coating using the EIS method

et al. 2009

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Buried pipelines are commonly coated with high solid polyurethane to prevent corrosion. The diffusion of water through the coating plays an essential role in the performance and endurance of the coating. This study focuses on the evaluation of water diffusion through polyurethane coatings. The effects of thickness and ambient temperature on water diffusion through polyurethane, which is coated on mild steel and immersed in 3.5% (weight fraction) NaCl solution, are evaluated using electrochemical impedance spectroscopy (EIS). Experimental observations clearly indicate that the water diffusion coefficient strongly depends on service temperature and the thickness of coating. Higher temperature (lower than T g ) increases water uptake of the polymer but no measurable changes were observed for the temperature change studied. EIS results show that the mechanism of corrosion does not change in the range of thicknesses and temperature investigated in this study.

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Evaluation of thick organic coatings degradation in seawater using cathodic protection and thermally accelerated tests

Cited by 83 publications

References 15 publications

Silane-incorporated epoxy coatings on aluminum alloy (AA2024). Part 1: Improved corrosion performance

Silane-incorporated epoxy coatings on aluminum alloy (AA2024). Part 1: Improved corrosion performance

Effects of surface modification with hydroxyl terminated polydimethylsiloxane on the corrosion protection of polyurethane coating

Evaluating water transport through high solid polyurethane coating using the EIS method

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