Electrochemical Behavior of Carbon Steel in Carbon Dioxide-Saturated Diglycolamine Solutions

Guo, Xingpeng; Tomoe, Yasuyoshi

doi:10.5006/1.3284812

Cited by 22 publications

(18 citation statements)

References 1 publication

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“…On the one hand, increasing Cl À concentrations will reduce the corrosion rate due to the reducing solubility of CO 2 gas in aqueous solution (Ref 23). On the other hand, the addition of Cl À ions will diminish the formation trend of passive films or accelerate the cracking of passive films, both of which result in the serious attack ( Ref 24,25). It is observed that some sites near the damaged corrosion product layers are covered by one layer of salt sediment produced from the test solution.…”

Section: Electrochemical Measurementmentioning

confidence: 94%

Characterization of Corrosion Product Layers from CO2 Corrosion of 13Cr Stainless Steel in Simulated Oilfield Solution

Yin

Wang

Liu

et al. 2010

J. of Materi Eng and Perform

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The influence of temperature and flow rate on the characterization and mechanisms of corrosion product layers from CO 2 corrosion of 13Cr stainless steel was carried out in simulated oilfield solution. Cyclic potentiodynamic polarization method as well as weight loss tests in autoclave were utilized to investigate pitting corrosion behavior at various temperatures. Weight loss tests were performed at 100 and 160°C under dynamic and static flow conditions. At the same time, the significant pitting parameters such as E corr , E pit , E pp , DE, and I pass in cyclic polarization curves at various temperatures were analyzed and compared for revealing the pitting behavior of 13Cr stainless steel. The surface measurement techniques such as SEM, XRD, and XPS were used to detect the corrosion product layers. The results showed that both temperature and flow rate had significant effects on characterization of corrosion product layers or passive films formed on 13Cr stainless steel in CO 2 corrosion system. At high temperature, lots of pits were formed at the localized corrosion areas of metal surfaces. Corrosion rates under the condition of 5 m/s were higher than those under the static condition regardless of the test temperatures.

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Section: Electrochemical Measurementmentioning

confidence: 94%

Characterization of Corrosion Product Layers from CO2 Corrosion of 13Cr Stainless Steel in Simulated Oilfield Solution

Yin

Wang

Liu

et al. 2010

J. of Materi Eng and Perform

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show abstract

“…Moreover, most of the Nyquist plots depicted depressed semicircles characteristic of charge transfer resistance (R ct ). After 185 h, Warburg impedance was seen for A106 in MEA-C, indicating diffusion of species related to the corrosion process might be inhibited [16,[41][42][43].…”

Section: Eis Measurementsmentioning

confidence: 99%

Corrosion mitigation via a pH stabilization method in monoethanolamine-based solutions for post-combustion CO2 capture

et al. 2016

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A pH stabilization method was investigated to mitigate corrosion in aqueous 5 M monoethanolamine for post-combustion CO 2 capture. The room temperature pH of a naturally aerated CO 2-loaded solution (i.e., 9.7) was adjusted with NaHCO 3 powders to 9.3 and 9.1, and its effect on corrosion of A106 carbon steel was studied. Lower pH initially accelerated corrosion but promoted protective FeCO 3 layer formation and subsequently A106 passivation (i.e., Fe 3 O 4 formation). Dissolved oxygen also played a pivotal role by functioning as an additional oxidizer, retarding FeCO 3 formation via preferentially oxidizing Fe 2+ to form rust, and promoting passivation of A106 under the FeCO 3 layer.

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“…In addition, the flow increased the shear stress of fluid on the surface of the material, damaging the protective film on the surface of the material. The damaged structures eventually tore off, leaving the metal matrix partially exposed [ 21 , 22 ] and, thus, accelerating pitting and increasing the rate of corrosion.…”

Section: Resultsmentioning

confidence: 99%

Corrosion Behavior of AISI 316L Stainless Steel Used as Inner Lining of Bimetallic Pipe in a Seawater Environment

Liu

Wang

et al. 2021

Materials

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Seawater leakage commonly leads to corrosion in the inner lining of submarine bimetallic pipes, with significant financial implications for the offshore oil and gas production industry. This study aims to improve understanding of the performance of bimetallic pipes by investigating the corrosion behaviors of mechanically bonded 316L stainless steel. Immersion experiments were conducted in a seawater environment, under both atmospheric conditions and high temperature and high pressure conditions, and corroded surfaces were examined using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) to reveal micromorphology and elementary compositions. The results demonstrated that the corrosion rates of the bonded 316L specimen were between 5% and 20% higher than those of specimens without bonding under atmospheric conditions. This is attributed to the stress cracking that occurs during corrosion. Under high temperature and high pressure conditions, the corrosion rates were remarkably increased (91% to 135%) and the corrosion process took longer to reach equilibrium. This may be attributed, firstly, to the products becoming increasingly porous and weak, and also to the fluid stress caused by stirring in these experiments to simulate seawater movement.

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Electrochemical Behavior of Carbon Steel in Carbon Dioxide-Saturated Diglycolamine Solutions

Cited by 22 publications

References 1 publication

Characterization of Corrosion Product Layers from CO2 Corrosion of 13Cr Stainless Steel in Simulated Oilfield Solution

Characterization of Corrosion Product Layers from CO2 Corrosion of 13Cr Stainless Steel in Simulated Oilfield Solution

Corrosion mitigation via a pH stabilization method in monoethanolamine-based solutions for post-combustion CO2 capture

Corrosion Behavior of AISI 316L Stainless Steel Used as Inner Lining of Bimetallic Pipe in a Seawater Environment

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