Corrosion and Corrosion Inhibition of Steel Pipelines in Montmorillonitic Soil Filling Material

El-Shamy, A. M.; Shehata, M. F.; Metwally, H. I. M.; Melegy, Ahmed

doi:10.1007/s12633-018-9821-4

Cited by 29 publications

(11 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the data, it can be concluded that the corrosion of α-brass reflects the endothermic nature in the presence of SG/CTAB and can be proven by the positive sign of ΔH a . The values of both ΔH and E a follows the similar trends, which permit to verify the known thermodynamic equation between the E a and ΔH a : (10) The close inspection of the data reveals that the formation of an activated complex in the rate-determining step is the association step, as the values of ΔS a are negative. This refers towards more ordering in the transformation from reactants to activated complexes due to desorption of water molecules from the α-brass specimen's surface followed by the adsorption of SG/CTAB molecules [16].…”

Section: Temperature Effect and Kinetic Parameterssupporting

confidence: 65%

“…Owing to the importance of brass, its corrosion properties have attracted increasing attention from researchers, thus investigation in this regard is an absolute necessity and warranted [7,8]. Corrosion inhibitors, which can provide effective protection from corrosion, is one of the scientifically substantiated and economically expedient methods to overcome this unwanted problem [9][10][11][12][13]. Indeed, the vast majority of organic compounds used as corrosion inhibitors are exceptionally electron-rich compounds, which can interact readily with metal surface in an electrolyte [14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Cetyltrimethylammonium bromide on the Corrosion Inhibition of a Lead-free α-Brass by Sodium Gluconate in Sulfuric Acid

Jennane

Touhami

Zehra

et al. 2019

J. Electrochem. Sci. Technol

View full text Add to dashboard Cite

The inhibition performance of sodium gluconate (SG), cetyltrimethylammonium bromide (CTAB) and their mixture (SG/ CTAB) on the corrosion behavior of α-brass in 0.5 M H 2 SO 4 solution has been investigated by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), Scanning Electron Microscope with Energy-Dispersive Spectrometer (SEM-EDS), Inductively Coupled Plasma Spectrometry (ICPS) and molecular dynamics (MD) simulation techniques. The results reveal that SG with 5ppm CTAB, noted SG/CTAB, acts as a good corrosion inhibitor and its inhibition efficiency reached 89% after 24 h immersion in sulfuric acid solution, but slightly decreased at higher temperatures. The polarization curves displayed that SG/CTAB acts as a cathodic-kind inhibitor. Electrochemical impedance spectroscopy (EIS) studies revealed that the addition of 5ppm CTAB to different concentrations of SG considerably increases the corrosion resistance of α-brass. The SEM-EDS and ICPS analyses support the experimental results. Further, molecular dynamics (MD) simulations were used to understand the adsorption profiles of SG/CTAB on Cu(111) and Zn(111) surfaces.

show abstract

Section: Temperature Effect and Kinetic Parameterssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Effects of Cetyltrimethylammonium bromide on the Corrosion Inhibition of a Lead-free α-Brass by Sodium Gluconate in Sulfuric Acid

Jennane

Touhami

Zehra

et al. 2019

J. Electrochem. Sci. Technol

View full text Add to dashboard Cite

show abstract

“…Two approaches for achieving cathodic protection, the first type is concerned with using sacrificial anodes as Al, Mg and/or zinc, which corrode by supplying the electrons to protect steel structures. The second type is concerned with using impressed current technique by applying any kind of cheap anodes, since the existed electrons are supplied from a rectifier [115]. The cathodic protection criteria for the shield of carbon steel pipelines in the soil, a potential of about -0.85 V, regarding to a Cu-CuSO4, half-cell, is frequently sustained.…”

Section: Cathodic Protectionmentioning

confidence: 99%

A Review on: Biocidal Activity of Some Chemical Structures and Their Role in Mitigation of Microbial Corrosion

El-Shamy¹

2020

Egypt. J. Chem.

View full text Add to dashboard Cite

Microbial corrosion has developed a foremost problematic in the oil and gas industrial field. This problem is by reason of the continual usage of water swamping in promoting oil recovery. This water moistens the walls of oil pipelines. Microbial corrosion is also present in other industries such as nuclear power reactors and in most hydropower applications. Increased corporate infrastructure also leads to increased microbial corrosion. Sulfate Reducing Bacteria (SRB) is considered as the main kind of bacterial which cause of pipeline corrosion. Because of microbial deterioration is not understood, until recently, there is no clear mechanism to explain why and how microbial corrosion occurs because of the complexity of this area. The new theory of biocatalytic cathodic sulfate reduction is bio-electrochemistry based. In this theory, the bioenergetics can explain why microbial corrosion occurs, while the extracellular electron transference theory is capable of explain how microbial corrosion happens. The microbial corrosion can be caused by nitrate reducing bacteria, which led to an analogous biocatalytic cathodic nitrate reduction theory. The electron mediator assessment intended to validate the extracellular electron transference progression which anticipated in biocatalytic cathodic sulphate reduction. The electron mediators like riboflavin and flavin adenine dinucleotide were accomplished of hastening the microbial corrosion by indorsing electron transport flanked by an iron surface and a biofilm. In case of deficient in organic carbon, the elemental iron substituted the organic carbons as an energy source/electron donor for SRB to get their conservation energy. Under unembellished undernourishment of organic carbon, the largest pit depth was accomplished, which was consistent with the estimate of biocatalytic cathodic sulphate reduction. The developing request and crucial necessity in oil and gas industry is to find an effectual method to avoid and/or mitigate microbial corrosion at a rational cost.

show abstract

“…It has been reported that the permeation of chloride ions into the interface can cause a localized attack on the passive film, such as in steels. [ 38,39,54,55 ] Thus, with the increase of chloride ion concentration, more chloride ions attack the sample, resulting in more nucleation and growth of the pits.…”

Section: Resultsmentioning

confidence: 99%

Susceptibility of chloride ion concentration, temperature, and surface roughness on pitting corrosion of CoCrFeNi medium‐entropy alloy

Wang

Chen

et al. 2021

Materials & Corrosion

View full text Add to dashboard Cite

The influence and susceptibility of chloride ion concentration, temperature, and surface roughness on corrosion behavior of single‐phase CoCrFeNi medium‐entropy alloy (MEA) was examined in NaCl solution. Potentiodynamic polarization results revealed that the corrosion performance of the sample deteriorated with an increase of the chloride ion concentration, temperature, and surface roughness. The pitting potential decreased drastically for samples with higher surface roughness. According to electrochemical impedance spectroscopy, the charge transfer resistance decreased when chloride ion concentration, temperature, and surface roughness increased. Scanning electron micrographs also indicated an increased extent of corrosion damage, especially for the sample with higher surface roughness. It is found that the corrosion resistance is closely related to the wettability of samples, and the surface with the highest roughness shows higher hydrophilicity. The combined results suggested that the pitting damage is more sensitive to surface roughness. Our findings provide a further understanding of the corrosion mechanism of MEAs and guide their applications as structural materials.

show abstract

Corrosion and Corrosion Inhibition of Steel Pipelines in Montmorillonitic Soil Filling Material

Cited by 29 publications

References 22 publications

Effects of Cetyltrimethylammonium bromide on the Corrosion Inhibition of a Lead-free α-Brass by Sodium Gluconate in Sulfuric Acid

Effects of Cetyltrimethylammonium bromide on the Corrosion Inhibition of a Lead-free α-Brass by Sodium Gluconate in Sulfuric Acid

A Review on: Biocidal Activity of Some Chemical Structures and Their Role in Mitigation of Microbial Corrosion

Susceptibility of chloride ion concentration, temperature, and surface roughness on pitting corrosion of CoCrFeNi medium‐entropy alloy

Contact Info

Product

Resources

About