Fe3C influence on the corrosion rate of mild steel in aqueous CO2 systems under turbulent flow conditions

Mora-Mendoza, José Luis; Turgoose, S.

doi:10.1016/s0010-938x(01)00141-x

Cited by 166 publications

(87 citation statements)

References 15 publications

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“…10c. It is generally agreed that ferrite is anodic to cementite (Fe 3 C) in CO 2 environment [94,95], which leads to the dissolution of eutectoid ferrite into Fe 2? ion and leaving behind a cementite (Fe 3 C) network in pearlite (Fig.…”

Section: Corrosionmentioning

confidence: 99%

Mechanical and Electrochemical Synergism of API X42 Pipeline Steel During Erosion–Corrosion

Islam

Farhat

2015

J Bio Tribo Corros

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Hydro-transportation is an economic and flexible way to transport natural resources such as oil and gas from excavation to the extraction plants, refineries, and consumer-ready products to markets. However, interaction between solid particles, corrosive fluid, and target material often results in significant mutual reinforcement due to the combined action of erosion and corrosion. In this study, erosion-corrosion behavior of API pipeline steel has been assessed in 2 g l -1 NaCl solution purged with CO 2 as the corrosive media and aluminum oxide as the erodent. Four different particle velocities (36, 47, 63, and 81 m s -1 ) were employed, while the angle of incidence was kept constant at 90°. The synergism between erosion and corrosion has been studied by means of a newly designed test approach to mitigate the limitations of the in situ method and to identify the effect of erosion on corrosion and vice versa. The corrosion process was monitored using potentiodynamic polarization and weight loss measurements. Total material loss rate and the components of erosion, corrosion, and their synergistic interactions have been determined. Scanning electron microscopy examination and experimental results show that there is an immense correlation between erosion and corrosion. Significant synergism was observed due to the interaction of different erosion and corrosion mechanisms.

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Section: Corrosionmentioning

confidence: 99%

Mechanical and Electrochemical Synergism of API X42 Pipeline Steel During Erosion–Corrosion

Islam

Farhat

2015

J Bio Tribo Corros

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“…Where C is capacitance, Yo is CPE constant it shows the avaiable surface area for the electrochemical reaction 16) , w" is the frequency found at the maximum of the imaginary part of the impedance, Z", n is the exponential term which can vary between 1 for pure capacitance and 0 for a pure resistor and also the value of n is measure of surface in inhomogeneity; the higher is its value, the lower is the surface roughening substrate 17) . Usually, in the neutral solution containing sodium chloride, iron develops different kind of surface oxides owing to the anodic dissolution that partially protects it against the severe attack of chloride anions.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Iron Nickel Oxide Nanopowder as Corrosion Inhibitor: Effect of Metallic Cations on Carbon Steel in Aqueous NaCl

Chaudhry¹,

Mittal²,

Mishra³

2016

Corrosion Science and Technology

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The aim of this study was to evaluate the use of iron-nickel oxide (Fe 2 O 3 .NiO) nanopowder (FeNi) as an anti-corrosion pigment for a different application. The corrosion protection ability and the mechanism involved was determined using aqueous solution of FeNi prepared in a corrosive solution containing 3.5 wt.% NaCl. Anti-corrosion abilities of aqueous solution were determined using electrochemical impedance spectroscopy (EIS) on line pipe steel (API 5L X-80). The protection mechanism involved the adsorption of metallic cations on the steel surface forming a protective film. Analysis of EIS spectra revealed that corrosion inhibition occurred at low concentration, whereas higher concentration of aqueous solution produced induction behavior.

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“…The corrosion product film is mainly composed of FeCO 3 and Fe 3 C [19][20][21], and it is loose at low concentrations of HCO À 3 ions and a protective passive film can only form at sufficiently high concentrations of HCO À 3 ions [22]. From Table 1, the concentration of bicarbonate ion in the three test media was relatively low, and the protective film is very hard to form, especially with the presence of the corrosive ions, such as chloride (Cl À ) and sulfate (SO 2À 4 ).…”

Section: Mechanisms Of Corrosion With Many Ions In Some Riversmentioning

confidence: 99%

The cavitation erosion and erosion‐corrosion behavior of carbon steel in simulating solutions of three rivers of China

Zheng

Yao

2006

Materials & Corrosion

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The corrosion behaviour of the Q235 carbon steel in simulation solution of Yangtze, Yellow and Talimu river of China was investigated by mass loss, electrochemical measurements (polarization curves, linear polarization resistance and electrochemical impedance spectroscopy) and the damaged surfaces were observed by a scanning electron microscope (SEM) under static, cavitation erosion and erosion-corrosion conditions. It was shown that under static condition, the E corr was almost the same in the three solutions but the anodic current density in Talimu river was about one order of magnitude larger than that in Yangtze and Yellow river. Under dynamic conditions including cavitation erosion and erosion-corrosion, the E corr in the three solutions all shifted in positive direction from that under static condition, but the extent of DE corr increased in the order of Yangtze, Yellow and Talimu river. The corrosion rate under dynamic conditions greatly enhanced, especially in Talimu river. It was confirmed that the corrosion played an important role in the synergistic effect under cavitation erosion and erosion-corrosion conditions. The test results suggested that when the structure materials used in the different rivers were chosen, the difference of corrosiveness of the rivers must be taken into account, especially under dynamic conditions. The materials used in the aggressive rivers such as Talimu river under dynamic conditions must resist the synergistic effects between erosion and corrosion.

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Fe3C influence on the corrosion rate of mild steel in aqueous CO2 systems under turbulent flow conditions

Cited by 166 publications

References 15 publications

Mechanical and Electrochemical Synergism of API X42 Pipeline Steel During Erosion–Corrosion

Mechanical and Electrochemical Synergism of API X42 Pipeline Steel During Erosion–Corrosion

Evaluation of Iron Nickel Oxide Nanopowder as Corrosion Inhibitor: Effect of Metallic Cations on Carbon Steel in Aqueous NaCl

The cavitation erosion and erosion‐corrosion behavior of carbon steel in simulating solutions of three rivers of China

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