Influence of outer rust layers on corrosion of carbon steel and weathering steel during wet–dry cycles

Zhang, Xu; Yang, Sen; Wen-hua, Zhang; Guo, Hui; He, Xiao

doi:10.1016/j.corsci.2014.01.016

Cited by 109 publications

(26 citation statements)

References 32 publications

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“…This outermost layer has cracks and pores, and highly susceptible to corrosion in aggressive marine environments. On reducing the pH of the seawater OHion concentration decreases and increases the H + ion concentration in the seawater electrolyte, this enabled the thickening of outermost layer with β-FeOOH and partly γ-FeOOH [32]. The electrochemical process involved was anodic liberation of Fe ion and cathodic reduction of H + ion.…”

Section: Mechanism Of Corrosionmentioning

confidence: 99%

Electrochemical Characteristics of BIS 2062 Carbon Steel Under Simulated Ocean Acidification Scenario

DEVIKA¹,

ASHRAF²

2020

Preprint

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Dear Professor,<div>I am herewith enclosing a research paper entitled “Electrochemical characteristics of BIS 2062 carbon steel under simulated ocean acidification scenario.” authored by Devika KR, and me. The research paper highlights the behavior of carbon steel in acidified natural seawater. Ocean acidification is a burning issue under climate change. Several studies have undertaken to understand the behavior marine organisms and marine environment. No studies have initiated regarding the deterioration of materials due to ocean acidification. Large number of materials were deployed in the ocean with different objectives. These materials are under risk as the ocean acidification continues. We believe this is the first attempt to study the impact of ocean acidification on carbon steel. The study conducted to evaluate the impact of ocean acidification on BIS 2062 boat building steel. The results showed that the carbon steel will deteriorate 2 to 3 times higher when pH was changed from 8.05 to 7.90. The data highlights the immediate need to redesign the marine materials within 1-2 decade. The paper also highlights the possible mechanism of deterioration under different pH scenario.Thanking youSincerelyashrafp </div>

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Section: Mechanism Of Corrosionmentioning

confidence: 99%

Electrochemical Characteristics of BIS 2062 Carbon Steel Under Simulated Ocean Acidification Scenario

DEVIKA¹,

ASHRAF²

2020

Preprint

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“…When the samples were immersed in the simulated solution or simulated soil environments, the electrode reaction occurred at the interface between the matrix and the solution or liquid lms (eqn (8) and (9)), and g-FeOOH gradually covered the surfaces of the specimens (10)- (12).…”

Section: The Models Of Corrosion Mechanismsmentioning

confidence: 99%

“…11 The corrosion of carbon steel in NaCl solution was investigated by using in situ Raman spectroscopy. 12 The rust layer was composed of g-FeOOH as an outer layer and Fe 3 O 4 as an inner layer. 13,14 The FeOOH was transformed into Fe 3 O 4 when oxygen was insufficient, and the corrosion rate declined when the FeOOH layer became thicker and denser.…”

Section: Introductionmentioning

confidence: 99%

Effect of iron ion diffusion on the corrosion behavior of carbon steels in soil environment

et al. 2018

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“…Reinforced concrete (RC) has been widely used in coastal environments, such as bridges, docks and offshore platforms, while its unexpected durability always baffles the construction industry [1][2][3]. Chloride-induced steel corrosion has commonly been accepted as the major reason for deterioration of RC structures [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Application of Ag/AgCl Sensor for Chloride Monitoring of Mortar under Dry-Wet Cycles

Tian

Zhang

Zhao

et al. 2020

Sensors

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An Ag/AgCl electrode used as a corrosion sensor in a reinforced concrete structure is considered as having good application prospect. However, its performance under complex conditions, such as dry-wet cycle condition, is not affirmed. In the current study, the performance of Ag/AgCl as chloride selective electrode in mortar exposed to dry-wet cycle condition was investigated. A simple Ag/AgCl electrode was prepared and fabricated by electrochemical anodization. These Ag/AgCl electrodes were embedded into a mortar specimen with temperature sensors, humidity sensors and anode ladder monitoring system (ALS). After 28 d curing time, the upper surface of mortar specimen was wetted (with 5% NaCl solution) and dried regularly. The obtained results indicate that Ag/AgCl electrode responds to the ingress of chloride ion, sensitively. The chloride ion concentration variation can be reflected by the potential trend. Furthermore, the balance potential of Ag/AgCl electrodes is influenced by dry-wet cycles. Compared with ALS, it demonstrates that Ag/AgCl electrodes are more sensitive to chloride. The research provides the key element for the specific application of Ag/AgCl electrode for corrosion monitoring in the future.

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Influence of outer rust layers on corrosion of carbon steel and weathering steel during wet–dry cycles

Cited by 109 publications

References 32 publications

Electrochemical Characteristics of BIS 2062 Carbon Steel Under Simulated Ocean Acidification Scenario

Electrochemical Characteristics of BIS 2062 Carbon Steel Under Simulated Ocean Acidification Scenario

Effect of iron ion diffusion on the corrosion behavior of carbon steels in soil environment

Application of Ag/AgCl Sensor for Chloride Monitoring of Mortar under Dry-Wet Cycles

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