A study on corrosion of X80 steel in a simulated tidal zone

Zhou, Xiaobao; Wu, Tangqing; Lin, Tao; Deng, Jiahao; Liu, Cong; Qiu, Wei

doi:10.1016/j.jmrt.2021.04.014

Cited by 27 publications

(6 citation statements)

References 20 publications

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“…8 Moreover, it was confirmed that the corrosion rate is associated with the wet/dry cycle and the height of the steel strip exposed to the tidal zone. 6,7 Therefore, it is necessary to conduct research on the corrosion behaviour of tidal zone in specific seas with their different tidal cycles, temperatures and salinity.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Beibu Gulf tidal zone exposure on properties of carbon steel

Yu,

Liao,

Zhou

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

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Marine tidal zone is a corrosive environment that has a negative impact on carbon steel. This research investigates the change of mechanical properties and corrosion behaviour of carbon steel specimens subjected to field exposure test and simulation test for 12 and 6 months, respectively. The corrosion behaviour of carbon steel exposed to real marine tidal zone and simulation environment was discussed through morphological observation and corrosion kinetics analysis, in order to reveal the essential reason for the degradation of its mechanical properties. Then the tensile test was performed on the corroded specimens and true stress–strain curves were obtained. In addition, regression equations were derived for the mechanical properties as a function of the degree of corrosion degradation and a constitutive model with time factor for corroded carbon steel is proposed.

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Section: Introductionmentioning

confidence: 99%

Analysis of Beibu Gulf tidal zone exposure on properties of carbon steel

Yu,

Liao,

Zhou

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

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“…The activities of these electroactive species impact the corrosion rate of the steel, which further depends on the pH of the solution as well as the presence of other electroactive species like chlorides (Cl -). Prior studies have indicated that corrosion in a higher pH simulated soil environment generally progresses via selective dissolution and repeated rupture of the passive film along grain boundaries [6][7]. The anodic behavior of iron in the presence of a carbonate-bicarbonate solution leads to the formation of passive oxides/hydroxides [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical behavior of X70 and X80 pipeline steels in a simulated soil environment with and without the presence of chlorides

Ghosh

Chinara

Godbole

et al. 2023

Preprint

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The present work investigates the effect of microstructure, pH as well as the role of aggressive chloride ions on the corrosion behavior of American Petroleum Institute (API) X70 and X80 steel grades. The corrosion behavior was studied using single-run dynamic and cyclic polarization in different solutions followed by microstructural analysis of the corroded samples to determine the mode and extent of corrosion damage. The solutions consist of a near-neutral aqueous sodium chloride solution, mildly alkaline carbonate-bicarbonate solution (pH-8.8), and highly alkaline carbonate-bicarbonate solution (pH-12) with and without the presence of chlorides. Ferrite phase in both the steel was found to dissolve preferentially in the different solutions leading to pitting as a result of microgalvanic coupling with the cementite and/or bainite phase. Interestingly, the corrosion resistance of the X70 grade was found to be greater than X80 at near-neutral as well as low alkaline carbonate-bicarbonate solutions, whereas the X80 performed better in higher pH solutions. Such contrasting corrosion behavior is attributed to the compactness, thickness, and electronic resistance of the passive oxide/hydroxide films formed during polarization in both the steel.

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“…Analogously, the corrosion behaviour of CS in tidal zones is affected by environmental conditions [14]. The corrosion rate and current density of the steel are related to the height and differential aeration, whose anode exposed above the water with low oxygen utilisation is converted to a cathode [15]. The loose and porous rust is a positive characteristic of steel corrosion during the tidal cycle, besides, the corrosion rate of steel can be accelerated for a long wetting time [16,17].…”

Section: Introductionmentioning

confidence: 99%

Corrosion behaviour of carbon steel in Beibu Gulf tidal zone

et al. 2022

Corrosion Engineering, Science and Technology

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Corrosion behaviour of carbon steel (CS) exposed in the tidal zone of Beibu Gulf was investigated by experimental method. Q235 CS specimens were designed and exposed for 12 months. The corrosion mechanism of CS was characterised by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-Ray diffraction (XRD). Results show that the corrosion performance of CS can be verified by the formula D = at n . The corrosion products are mainly composed of α-FeOOH, γ-FeOOH, β-FeOOH, Fe 3 O 4 and γ-Fe 2 O 3 . Significantly, Clis an intermediate in the corrosion process and promotes the formation of the characteristic product β-FeOOH.

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A study on corrosion of X80 steel in a simulated tidal zone

Cited by 27 publications

References 20 publications

Analysis of Beibu Gulf tidal zone exposure on properties of carbon steel

Analysis of Beibu Gulf tidal zone exposure on properties of carbon steel

Electrochemical behavior of X70 and X80 pipeline steels in a simulated soil environment with and without the presence of chlorides

Corrosion behaviour of carbon steel in Beibu Gulf tidal zone

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