Effect of Fe ion concentration on corrosion of carbon steel in CO2 environment. (2nd January 2016)

• Record Type: Journal Article
• Authors: Rogowska, M.; Gudme, J.; Rubin, A.; Pantleon, K.; Ambat, R.
• Is Part Of: Corrosion engineering, science, and technology. Volume 51:Number 1(2016)
• Page Start: 25
• Page End: 36
• Publication Date: 2016-01-02
• Subjects: Carbon steel -- Carbon dioxide -- Supersaturation -- Linear polarisation resistance -- Scanning electron microscopy -- X-ray diffraction -- Passivation; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1179/1743278215Y.0000000029
• Languages: English
• ISSNs: 1478-422X

Abstract

Abstract : In this work, the corrosion behaviour of steel wires in solutions containing different concentrations of Fe 2+ was investigated by the linear polarisation resistance method, while the evolution of pH was monitored in situ and changes of the Fe 2+ concentration were monitored ex situ . Characterisation of the corrosion scales was performed using microscopic and diffraction techniques. Scale analysis revealed that the passivation of samples, exposed to initially highly Fe 2+ supersaturated solution, occurred when a formation of a double layer took place, resulting in 30 times lower corrosion rate compared to samples tested in solutions without initial Fe 2+ .