Evaluation of Polymeric Coatings in CO2 Containing Environment

Rayane Z.C. Demoner; Alexandre R.P. Castro; Adriana Barros; J.P. Quintela; Jefferson R. de Oliveira; I.S. Bott

doi:10.4028/www.scientific.net/MSF.965.133

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Evaluation of Polymeric Coatings in CO₂ Containing Environment
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HomeMaterials Science ForumMaterials Science Forum Vol. 965Evaluation of Polymeric Coatings in CO2 Containing...

Evaluation of Polymeric Coatings in CO₂ Containing Environment

Abstract:

Two types of polymeric coating were applied on an AISI 1020 steel, where one of them was reinforced by carbon nanotubes, with the objective of protection against corrosion in a medium containing saline solution, NaCl 3% wt satured with CO₂, at 75 bar and tested at 50oC and 75oC for 360 hours. Electrochemical techniques, such as Linear Polarization Resistance, (LPR), Electrochemical Impedance Spectroscopy (EIS), Tafel curves and weight loss method, were used for coating evaluation performance. Scanning Electron Microscopy (SEM), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) were used to determine both the morphology and chemical composition of the layer formed on the analyzed surfaces. The coating adhesion to metallic surface was evaluated using pull-off test according to ASTM D4541-09. For the studied conditions, the results obtained showed that there was no adequate coating protection, occurring failures and indicating that both coatings may not be used in the tested conditions.

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Periodical:

Materials Science Forum (Volume 965)

Pages:

133-141

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.965.133

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Online since:

July 2019

Authors:

Rayane Z.C. Demoner, Alexandre R.P. Castro, Adriana Barros, J.P. Quintela, Jefferson R. de Oliveira, I.S. Bott*

Keywords:

Carbon Dioxide (CO₂), Carbon Nanotubes, Epóxi Novolac, Polymer Nanocomposites

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* - Corresponding Author

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