Application of electrochemical techniques in investigation of the role of hydrogen in near-neutral pH stress corrosion cracking of pipelines

Cheng, Y. Frank; Niu, Lin

doi:10.1007/s10853-006-1180-7

Cited by 5 publications

(2 citation statements)

References 52 publications

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“…EIS provides valuable and effective data for a better understanding of the phenomena occurring at the interface to adopt the necessary conditions for effective corrosion protection. [38] Until now, researches have generally focused on mechanical and metallurgical aspects to improve the resistance of steel to roughness and hydrogen cracking. [39][40][41][42] The evolution of hydrogen generated by a poorly controlled cathodic protection, the formation of calcareous deposits, the penetration of hydrogen, and the embrittlement of steels is not yet sufficiently clear.…”

Section: Introductionmentioning

confidence: 99%

Effects of Cathodic Polarization on the Corrosion Behavior of X60 Pipeline Steel in a Simulated Soil Solution

Mameri

Boughrara

Lazar

et al. 2022

steel research int.

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The objective of this study is to investigate the relationship between the cathodic polarization, the evolution of hydrogen, and its effect on the formation of calcareous deposits on X60 pipeline steel in a simulated soil solution and its behavior at open‐circuit potential (OCP) after interruption of cathodic polarization. Electrochemical measurement (chronoamperometry, potentiodynamic polarization, OCP evolution, electrochemical impedance spectroscopy (EIS)), and surface characterization techniques are used. The time evolution of EIS spectra is examined. The results show that cathodic polarization favors the release of hydrogen, and weakens and/or prevents the formation of calcareous deposits on the steel surface. After stopping polarization, the corrosion kinetics is retarded for high cathodic potentials, which could be due to the blocking of the surface by the adsorbed hydrogen.

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Section: Introductionmentioning

confidence: 99%

Effects of Cathodic Polarization on the Corrosion Behavior of X60 Pipeline Steel in a Simulated Soil Solution

Mameri

Boughrara

Lazar

et al. 2022

steel research int.

View full text Add to dashboard Cite

show abstract

“…Therefore, it is important to carry out these measurements when the sample is under stress to obtain electrochemical data during the SCC process. In this sense, electrochemical impedance spectroscopy (EIS) is an electrochemical technique that has been used to study passivation breakdown, crack initiation and propagation, and other events that take place during the SCC process on different metals [ 24 , 25 , 26 , 27 ]. Some studies [ 28 , 29 , 30 ] have carried out EIS measurements simultaneously on unstressed and stressed specimens, and they have suggested that the evolution of the phase angle shift (φ) at specific frequencies may be related to the initiation and propagation of cracks.…”

Section: Introductionmentioning

confidence: 99%

Study of SCC of X70 Steel Immersed in Simulated Soil Solution at Different pH by EIS

et al. 2021

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An electrochemical study of stress corrosion cracking (SCC) of API X70 steel in a simulated soil solution at different pH values (3, 8 and 10) was carried out. The stress conditions were implemented by slow strain rate stress test (SSRT) and the SCC process was simultaneously monitored by electrochemical impedance spectroscopy (EIS). Fracture surface analysis and corrosion product analysis were performed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The results show that the susceptibility to SCC was higher as the pH decreases. In the acid solution, hydrogen evolution can occur by H+ and H2CO3 reduction, and more atomic hydrogen can diffuse into the steel, producing embrittlement. EIS results indicated that the anodic dissolution contributed to SCC process by reducing the charge transfer resistances during the SSRT test. While SEM micrographs shown a general corrosion morphology on the longitudinal surface of samples. At higher pH (pH 8 and pH 10), the SCC susceptibility was lower, which it is attributed to the presence of corrosion products film, which could have limited the process. Using the angle phase (φ) value it was determined that the cracking process started at a point close to the yield strength (YS).

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Hydrogen related degradation in pipeline steel: A review

Ohaeri

Eduok

Szpunar

2018

International Journal of Hydrogen Energy

268

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Application of electrochemical techniques in investigation of the role of hydrogen in near-neutral pH stress corrosion cracking of pipelines

Cited by 5 publications

References 52 publications

Effects of Cathodic Polarization on the Corrosion Behavior of X60 Pipeline Steel in a Simulated Soil Solution

Effects of Cathodic Polarization on the Corrosion Behavior of X60 Pipeline Steel in a Simulated Soil Solution

Study of SCC of X70 Steel Immersed in Simulated Soil Solution at Different pH by EIS

Hydrogen related degradation in pipeline steel: A review

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