Instrument of chloride ions on the pitting corrosion of electroplated steel alloy 4130

Reda, Y.; El-Shamy, A. M.; Zohdy, K.M.; Eessaa, Ashraf K.

doi:10.1016/j.asej.2019.09.002

Cited by 38 publications

(11 citation statements)

References 57 publications

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“…Figure 2. Rendering to Figure 2, the OCP of the steel alloy 4130 sampling after immersion in 3.5 wt.% NaCl solutions speedily declined and touched a steady rate after 200 s. e disbanding of oxide layer [46,47] and the adsorption particles on the substrate of steel alloy 4130 are the foremost explanations for the detected OCP weakening [48][49][50]. It is well-known that by growing the period of immersion and the LI concentration the OCP values turn out to be more negative, approving the role of foremost cathodic inhibition of the LI.…”

Section: Eory and Computational Detailsmentioning

confidence: 79%

Optimization of the Influencing Variables on the Corrosion Property of Steel Alloy 4130 in 3.5 wt.% NaCl Solution

El-Shamy

El-Hadek

Nassef

et al. 2020

Journal of Chemistry

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In this work, the aqueous Lawsonia inermis extract (LI) is investigated as an economic and green deterioration inhibitive formula for steel alloy 4130 in 3.5 wt.% NaCl solutions. The water-based extraction process is considered as one of the cheapest techniques for preparation of active ingredients of natural products. These ingredients play an important role in corrosion mitigation of steel alloy 4130 in saline media. This extract was subjected to three different parameters: inhibitor concentration, rotation speed, and temperature in 3.5 wt.% NaCl solutions. The electrochemical techniques are used to perceive the corrosion behavior, and the obtained results were dedicated to theoretical explorations to assess the features of corrosion inhibition and the adsorption over the steel substrate in 3.5 wt.% NaCl solutions. Affording to the electrochemical techniques of LI showed very promising results against corrosion depending on the inhibitor concentrations. The inhibition efficiency of LI was additionally appraised at three diverse temperatures, and the results disclosed that the inhibition efficiency is decreased. Additionally, the theoretical aspects illuminated that the main active ingredients of LI have a proclivity to coagulate on the steel substrates allowing these areas to paradigm a protecting layer on the steel surfaces. This behavior is in provision of investigational results. Statistical studies were used to examine the consequence of chief constraints (i.e., inhibitor concentration, temperature, and rotation speed) on the inhibition efficiency and the rate of corrosion of steel alloy 4130. The inhibitive effect of LI in contradiction of the corrosion of steel alloy 4130 surfaces is considered by resources of DFT/6-31G(d) calculations. The quantum chemical parameters interrelated to the inhibition efficiency are considered.

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Section: Eory and Computational Detailsmentioning

confidence: 79%

Optimization of the Influencing Variables on the Corrosion Property of Steel Alloy 4130 in 3.5 wt.% NaCl Solution

El-Shamy

El-Hadek

Nassef

et al. 2020

Journal of Chemistry

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“…Rendering to the realities that underneath biofilm deterioration in deoxygenated soils was allied with hydrogen sulphide, that hydrogen sulphide was produced by SRB, and that these bacteria could employ molecular hydrogen for the reduction process of sulphate and sulphur, which proposed a cathodic depolarization theory to an interpretation for this corrosion [99]. Fig.…”

Section: Cathodic Depolarization Theory 1211 Classical Theorymentioning

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.

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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.

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“…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

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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.

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Instrument of chloride ions on the pitting corrosion of electroplated steel alloy 4130

Cited by 38 publications

References 57 publications

Optimization of the Influencing Variables on the Corrosion Property of Steel Alloy 4130 in 3.5 wt.% NaCl Solution

Optimization of the Influencing Variables on the Corrosion Property of Steel Alloy 4130 in 3.5 wt.% NaCl Solution

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

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