TITLE:
Corrosion Resistance of API5L X52 Carbon Steel in Sulfide Polluted Environments
AUTHORS:
Randa Abdel-Karim, Mohamed Ali Farag, Hafiz Abdel-Azim Ahmed, Saad El-Raghy
KEYWORDS:
Carbon Steel, Sulfides, Weight Loss, Anodic Dissolution, Polarization
JOURNAL NAME:
Materials Sciences and Applications,
Vol.7 No.1,
January
29,
2016
ABSTRACT: In the present work, the corrosion behavior of base and welded API5L X-52 carbon steel coupons in synthetic ground water solution NS-4 was studied. Subsequently, the morphology and composition of the corrosion product deposits were determined using scanning electron microscopy (SEM). Based on weight loss as well as Tafel’s measurements, increasing the sulfide ions content above 0.4 mM, had an inhibition effect on the corrosion behavior of carbon steel. According to EDAX analyses, increasing of sulfide concentration from 0.4 to 4 mM Na2S, the Fe/S ratio decreased from 12.02 at 0.4 mM to 2.6 at 4 mM Na2S.