Temperature effect on pitting corrosion of mild steel in de-aerated sodium bicarbonate-chloride solutions

Jelinek, J.; Neufeld, P.

doi:10.1016/0010-938x(80)90066-9

Cited by 28 publications

(19 citation statements)

References 12 publications

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“…With the increased cycling, the dissolution regime did not show significant changes or become of higher currents, but the peaks appeared at lower potentials, down to 0 V(SCE), and with lower critical currents, down to 450 mA cm 22 . The peaks of the last six cycles started to appear as a coalescence of two peaks.…”

Section: Long Range Cyclic Voltammetrymentioning

confidence: 95%

“…10,11,26 They suppress the underlying dissolution further and by that they resulted in the second peaks with diminishing intensities with increased cycling. The transpassivation currents were as high as 700 mA cm 22 .…”

Section: Long Range Cyclic Voltammetrymentioning

confidence: 99%

“…8,9,16 The passive film grows further as the passivation clusters, consisting of a mixture of Fe(OH) 2 and FeCO 3 , connect to become intricate layers that suppress the dissolution and ultimately decrease the anodic currents, forming the first anodic peaks. [17][18][19][20][21][22] During the passivation process, the FeCO 3 based film reacts with a continuous flux of electroactive species to form iron oxides at higher potentials. 7,14,[23][24][25] The iron oxides could form from the earlier stages of the dissolution directly from the surface.…”

Section: Introductionmentioning

confidence: 99%

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Effect of bicarbonate concentration on corrosion of high strength steel

Eliyan

Alfantazi

2014

Corrosion Engineering, Science and Technology

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This research evaluates the passivation process, in relation to the anodic and cathodic reactions, in deoxygenated solutions of different bicarbonate concentrations. Two types of API-X100 steel microstructures were examined. They are similar to near fusion heat affected zones (HAZs) which were produced by special thermal cycles. By monitoring the open circuit potentials, the passivation process exhibited electrochemical signs that it forms faster with higher bicarbonate concentration. During cyclic voltammetry, bicarbonate in concentrations less than 0?1M impedes the passivation, by catalysing the anodic dissolution. In higher concentrations, bicarbonate seemed more protective in facilitating the development of thicker passive films, from an electrochemical perspective that encourages corresponding physicochemical investigations in the future. The transpassivation seemed to depend more on the chemistry of the passive film than on the formation of FeCO 3 . Cooling down the HAZs at high rates could make them more corrosion resistant, but probably of less protective corrosion products.

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Section: Long Range Cyclic Voltammetrymentioning

confidence: 95%

Section: Long Range Cyclic Voltammetrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of bicarbonate concentration on corrosion of high strength steel

Eliyan

Alfantazi

2014

Corrosion Engineering, Science and Technology

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“…Adsorption and deposition processes ensuing are those resistant to destabilization caused by Cl À /SO 4 2À , an established occurrence for iron/steels in general [33] and pipeline steels in specific (e.g., X80 [21,34] and X100 [35] ). Cl À adsorption on steel inhibits the formation of pre-passive ferrous complexes such as FeHCO 3 and Fe(OH) 2 , [22] hampering the more advanced reaction steps which lead to stable film formation.…”

Section: àmentioning

confidence: 99%

Low Alloy X100 Pipeline Steel Corrosion and Passivation Behavior in Bicarbonate-Based Solutions of pH 6.7 to 8.9 with Groundwater Anions: An Electrochemical Study

Gadala

Alfantazi

2015

Metall Mater Trans A

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This research investigates the fundamental corrosion and passivation processes occurring on API-X100 pipeline steels before, during, and after passive layer formation in bicarbonate-based simulated soil solutions of pH 6.7 to 8.9. Free corrosion potentials decrease exponentially with bicarbonate (and pH), owing to increased water and bicarbonate reduction in more alkaline conditions and the coupled iron oxidation reaction. Active corrosion rates at potentials slightly above open circuit potential increase with bicarbonate, until a concentration of 1.68 g L À1 sodium bicarbonate (plus dilute amounts of chlorides/sulfate) at which first signs of film formation appear. Thereon, increased bicarbonate concentration generally decreases current densities and resists ferrous-oxide product formations due to improved iron carbonate formation conditions precipitating more durable passive layers. Potentiodynamic polarization in the anodic regime reveals varying electrochemical processes involving interactions between hydroxide, carbonate, and oxide complexes with ferrous, with diverse pH and potential dependencies. The products of corrosion reactions were investigated by scanning electron microscopy, X-ray diffraction, and/or X-ray photoelectron spectroscopy.

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“…[1][2][3][4] High strength steel can reduce weights of marine infrastructures and lessen the environmental burden by using less material. AISI 4135 steel is a kind of low alloy steel that its high strength, fair plasticity and toughness can be achieved through heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Study on the Temperature Dependence of Pitting Behaviour of AISI 4135 Steel in Marine Splash Zone

et al. 2015

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The corrosive condition at marine splash zone is detrimental to steel structures of offshore applications. The corrosion at splash zone is the most serious not only for uniformed corrosion but also localized corrosion. Practically, marine structures experience cyclic seasonal temperature change. Temperature acts as an important factor affecting corrosion process. In this paper, the effects of temperature on pitting behavior of a low alloy high strength steel (AISI 4135) in marine splash zone have been investigated using electrochemical techniques and morphology observations. The area of hysteresis loop was greater under seawater film at lower temperatures than that at high temperatures, indicating that the pitting corrosion sensitivity is high at lower temperature. AISI 4135 steel has the potential danger of pitting corrosion in marine splash zone after long exposure.

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Temperature effect on pitting corrosion of mild steel in de-aerated sodium bicarbonate-chloride solutions

Cited by 28 publications

References 12 publications

Effect of bicarbonate concentration on corrosion of high strength steel

Effect of bicarbonate concentration on corrosion of high strength steel

Low Alloy X100 Pipeline Steel Corrosion and Passivation Behavior in Bicarbonate-Based Solutions of pH 6.7 to 8.9 with Groundwater Anions: An Electrochemical Study

Study on the Temperature Dependence of Pitting Behaviour of AISI 4135 Steel in Marine Splash Zone

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