Comparative analysis for the corrosion susceptibility of Cu, Al, Al–Cu and C‐steel in soil solution

Noor, Ehteram A.

doi:10.1002/maco.200905572

Cited by 12 publications

(10 citation statements)

References 29 publications

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“…Therefore, the pipeline steels were prone to failure by pitting corrosion . Corrosion of buried metals can be affected by a variety of factors in a corrosive soil environment, including: soil water content, chemical constituents, the pH of the corrosion environment, electrical resistivity, soil type, salinity, porosity, and others, which have been investigated extensively in previous studies . However, the effect of soil particle size, especially in the sand fraction, on the electrochemical corrosion behavior of underground metal structures is not yet clearly understood.…”

Section: Introductionmentioning

confidence: 99%

The influence of particle size on the long‐term electrochemical corrosion behavior of pipeline steel in a corrosive soil environment

Hou

et al. 2017

Materials & Corrosion

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In this work, the effect of particle size (0.25, 1.0, 1.5 mm) on the electrochemical corrosion behavior of X70 pipeline steel in a 1.5 wt% NaCl sandy soil corrosion system was investigated by electrochemical techniques including linear polarization resistance, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) in combination with SEM‐EDS surface analysis, and X‐ray diffraction characterization. The laboratory experiments indicated that the corrosion rate of X70 pipeline steel increased with decreasing soil particle size to less than 1.0 mm and was mainly determined by a cathodic reaction. Whereas when the soil particle size increased beyond 1.0 mm, the corrosion rate of X70 steel decreased as the soil particle size decreased and the dominant reaction was metal dissolution in the bulk zone, and the corrosion rate was determined by anodic reaction. Additionally, the results of analysis of the metal surface morphologies agreed with the electrochemical measurements results. Corrosion of X70 pipe steel is affected by particle‐sizes in a corrosive soil environment.

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Section: Introductionmentioning

confidence: 99%

The influence of particle size on the long‐term electrochemical corrosion behavior of pipeline steel in a corrosive soil environment

Hou

et al. 2017

Materials & Corrosion

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“…1 West‐East gas pipeline project of underground pipeline engineering mainly uses X70 steel, and about 4000 km long pipeline is buried in the desert of saline soil area in Northwest China . The soil corrosion process of the underground metal structure is influence by many factors, such as water content, chemical composition, environmental pH value, the electrical resistivity, soil type, salinity, noise, porosity and other factors, and the effect of these factors have been investigated by many researches . However, the effect of soil particle size on the electrochemical corrosion behavior of underground metal structure is not fully understood, as corrosion mechanism in soil environment has not been fully uncovered.…”

Section: Introductionmentioning

confidence: 99%

Effect of particle size on the electrochemical corrosion behavior of X70 pipeline steel

Han

et al. 2015

Mat.-wiss. u. Werkstofftech

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In this study, by using a standard quartz replace of sandy soil particles, the effect of soil particle size (0.1-0.25 mm, 0.6-1.0 mm) on the electrochemical corrosion behavior of X70 pipeline steel in sandy soil corrosive environment simulated by 3.5 wt% sodium chloride (NaCl) was investigated through polarization curve and electrochemical impedance spectroscopy (EIS) technology. The results indicated that the polarization resistance of X70 steel decreased with decreasing particle size. For all polarization curves, the right shift of cathodic branch with decreasing particle size, suggesting that the cathode oxygen reduction process is accelerated. The corrosion of X70 steel is controlled by the process of cathode diffusion and oxygen reduction. This can be attributed to the effect of gas/liquid/solid three-phase boundary (TPB) zone on cathodic process of X70 steel, and the corrosion rate is mainly determined by the cathodic reaction. EIS of X70 steel consisted of two capacitive loops with 7, 60 and 90 days buried corrosion, and the charge transfer resistance of X70 steel increased with increasing particle size.Keywords: Sandy soil corrosion / particle size / X70 pipeline steel / gas / liquid / solid three-phase boundary (TPB) zone Schlüsselwörter: Sandbodenkorrosion / Partikelgröße / X70 Pipelinestahl / gasförmig / flüssig / fest / Dreiphasengrenze

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“…Metallic structures, such as piping for the storage or distribution of oil, gas, or minerals, as well as electric power transmission lines, come in constant contact with the soil. Depending on the aggressiveness of the soil, such structures may well be subject to deterioration processes caused by corrosion, which can result in negative impacts on society due to economic, aesthetic, and safety consequences .…”

Section: Introductionmentioning

confidence: 99%

“…The present work describes the complexity of these phenomena and considers a wide range of important parameters, such as the electrochemical activities on the metal's surface and macro‐environmental processes, such as rainfall, water flow, and transport of oxygen through the soil. Other parameters, such as pH, humidity, resistivity, redox potential, quantity of soluble salts, and the presence of bacteria, were also contemplated in the proposed model, and have been regularly cited in prior literature .…”

Section: Introductionmentioning

confidence: 99%

“…In the majority of studies, the assays are conducted in synthetic solutions prepared with components such as Na + , K + , Mg 2+ , Ca 2+ , Cl – , HCO 3 – , NO 3 – , and SO 4 2– . In addition, the works use electrochemical techniques, such as linear polarization resistance (LPR), polarization curves, and electrochemical impedance spectroscopy (EIS), as tools to evaluate the performance of metals subjected to the aggressiveness of these components found in the soil .…”

Section: Introductionmentioning

confidence: 99%

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Corrosion monitoring of galvanized steel in soil extract solutions by electrochemical impedance spectroscopy

Lopes

Loureiro

Junqueira

2014

Materialwissenschaft Werkst

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The chemical and structural complexity of soils, coupled with their heterogeneity, contributes to the increase in soil aggressiveness, which can in turn result in severe corrosion of underground materials. The understanding of corrosive processes of underground structures is important in aiding the development of methods, as well as in monitoring and maintenance, in an attempt to minimize environmental, social, and economic impacts. In this work, electrochemical impedance spectroscopy (EIS) was used to monitor the corrosive process of galvanized steel when in contact with soil extracts, aimed at evaluating the potentiality of applying electrochemical impedance spectroscopy when monitoring underground structures. To accomplish this, the behavior of the galvanized steel when undergoing corrosion was studied for 105 days, examining the variations in the eletrochemical parameter values obtained through EIS assays over this period. EIS proved to be effective in the study of corrosive processes of galvanized steel when in contact with soil extracts, identifying the different stages of the corrosive process, controlled by mass and/or charge transfer reactions.

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Comparative analysis for the corrosion susceptibility of Cu, Al, Al–Cu and C‐steel in soil solution

Cited by 12 publications

References 29 publications

The influence of particle size on the long‐term electrochemical corrosion behavior of pipeline steel in a corrosive soil environment

The influence of particle size on the long‐term electrochemical corrosion behavior of pipeline steel in a corrosive soil environment

Effect of particle size on the electrochemical corrosion behavior of X70 pipeline steel

Corrosion monitoring of galvanized steel in soil extract solutions by electrochemical impedance spectroscopy

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