Characterisation of organic coatings in sour media and influence of polymer structure on corrosion performance

S Duval (1) , Y Camberlin (1) , M Glotin (2) , Michel Keddam (3) , F Ropital (1) , Hisasi Takenouti (3)

1 IFPEN - IFP Energies nouvelles
2 ELF Atochem
3 LISE - Laboratoire Interfaces et Systèmes Electrochimiques

Epoxy coatings were evaluated in hydrogen sulphide containing sour media. Coatings exhibit no change in electrochemical impedance spectroscopy (EIS) spectra, though under-film corrosion occurs. In fact, hydrogen sulphide and water permeate through the polymer and provoke corrosion without causing film damage. EIS was also used to associate polymer structure and the corrosion protection performance. The effects of stoichiometric composition, average weight between cross-links and temperature changes as interpreted by glass transition effect were investigated.

Domaines: Chimie

S Duval, Y Camberlin, M Glotin, Michel Keddam, F Ropital, et al.. Characterisation of organic coatings in sour media and influence of polymer structure on corrosion performance. Progress in Organic Coatings, 2000, 39 (1), pp.15-22. ⟨10.1016/S0300-9440(00)00094-1⟩. ⟨hal-04275339⟩