Cost of corrosion

Koch, Gerhardus H.

doi:10.1016/b978-0-08-101105-8.00001-2

Cited by 258 publications

(120 citation statements)

References 2 publications

Supporting

Mentioning

116

Contrasting

Unclassified

Order By: Relevance

“…Corrosion in its general definition results from chemical or electrochemical action of an environment on metals and alloys in contact [1]. The consequences are important in various fields and, in particular, in the oil and gas industry, which in many cases, reduces its production or even needs to replace the corroded materials [2]. Iron and its alloys are, therefore, materials of choice for use in the industrial field thanks to their mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

New 8-Hydroxyquinoline-Bearing Quinoxaline Derivatives as Effective Corrosion Inhibitors for Mild Steel in HCl: Electrochemical and Computational Investigations

et al. 2020

View full text Add to dashboard Cite

There has been substantial research undertaken on the role of green synthesized corrosion inhibitors as a substantial approach to inhibit the corrosion of metals and their alloys in acidic environments. Herein, electrochemical studies, surface characterization, and theoretical modeling were adopted to investigate the corrosion inhibition proprieties of novel synthesized quinoxaline derivatives bearing 8-Hydroxyquinoline, namely 1-((8-hydroxyquinolin-5-yl) methyl)-3,6-dimethylquinoxalin-2(1H)-one (Q1) and 1-((8-hydroxyquinolin-5-yl)methyl) quinoxalin-2(1H)-one (Q2) on mild steel corrosion in 1 mol/L HCl solution. The principal finding of this research was that both inhibitors acted as good corrosion inhibitors with Q1 having the highest performance (96% at 5 × 10−3 mol/L). Electrochemical results obtained via potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) techniques demonstrated that quinoxaline compounds belonged to mixed-type inhibitors; their presence significantly increased the polarization resistance, preventing simultaneously anodic and cathodic reactions. Further, experimental results provided preliminary insights about the interactions mode between studied molecules and the mild steel surface, which followed the Langmuir adsorption model, and physical and chemical interactions assisted their inhibition mechanism. Besides, SEM analyses confirmed the existence of protective film on the metal surface after the addition of 5 × 10−3 mol/L of quinoxalines. In addition, the temperature and immersion time effects on inhibition performances of quinoxalines were investigated to evaluate their performances in different operating conditions. Besides, Density Functional Theory (DFT) and molecular dynamics (MD) simulations were carried out to explore the most reactive sites of quinoxaline inhibitors and their interaction mechanism. Theoretical results revealed that the inhibitor molecule with additional electron-donating functional group strongly interacted with the steel surface.

show abstract

Section: Introductionmentioning

confidence: 99%

New 8-Hydroxyquinoline-Bearing Quinoxaline Derivatives as Effective Corrosion Inhibitors for Mild Steel in HCl: Electrochemical and Computational Investigations

et al. 2020

View full text Add to dashboard Cite

show abstract

“…It can be precisely defined as an electrochemical process that depends upon the presence of electrolytes which may be rain, dew, humidity, or melting snow [1]. The degradation of steel structures due to corrosion is estimated to be 3-4% of a nation's GDP [2]. The characterization of the corrosion process using microscopic data could lead to a better understanding of the corrosion process, and in turn, lead to a decrease in the overall corrosion cost.…”

Section: Introductionmentioning

confidence: 99%

Qualitative Comparison of 2D and 3D Atmospheric Corrosion Detection Methods

et al. 2021

View full text Add to dashboard Cite

In this article, we report the use of a Confocal Laser Scanning Microscope (CLSM) to apply a qualitative assessment of atmospheric corrosion on steel samples. From the CLSM, we obtain high-resolution images, together with a 3D heightmap. The performance of four different segmentation algorithms that use the high-resolution images as input is qualitatively assessed and discussed. A novel 3D segmentation algorithm based on the shape index is presented and compared to the 2D segmentation algorithms. From this analysis, we conclude that there is a significant difference in performance between the 2D segmentation algorithms and that the 3D method can be an added value to the detection of corrosion.

show abstract

“…Nomenclature: Principal symbols: a, crack size; E, Young modulus; K mat , fracture toughness; K N mat , apparent fracture toughness; K IEAC , crack propagation threshold in EAC; K N IEAC , apparent crack propagation threshold in EAC; L, material critical distance; L EAC , material critical distance in EAC; W, specimen width; ρ, notch radius; σ U , ultimate tensile strength; σ Y , yield stress; σ 0 , inherent strength; σ 0EAC , inherent strength in EAC Principal abbreviations: EAC, environmentally assisted cracking; FEs, finite elements; HE, hydrogen embrittlement; PM, point method; TCD, theory of critical distances In order to avoid catastrophic failures but at the same time not to carry out premature repairs or replacements, which entails a high economic cost, it is necessary to study the behaviour of materials in aggressive environments. 2 Many structural integrity assessments assume crack-like defects, whereas in practice, defects may present a finite radius at their tip (eg, corrosion defects, mechanical damage, and fabrication defects). In such cases, they are referred to as notches, whose assessment as crack-like defects generally leads to overconservative results.…”

Section: Introductionmentioning

confidence: 99%

“…In order to avoid catastrophic failures but at the same time not to carry out premature repairs or replacements, which entails a high economic cost, it is necessary to study the behaviour of materials in aggressive environments …”

Section: Introductionmentioning

confidence: 99%

Prediction of crack propagation thresholds in notched steels subjected to environmentally assisted cracking: An approach from the theory of critical distances

Gutiérrez

Cicero

Arroyo

et al. 2019

Mat Design & Process Comms

View full text Add to dashboard Cite

This article presents the analysis of environmentally assisted cracking (EAC) processes in two steels containing U-shaped notches through the point method (PM). This methodology belongs to the theory of critical distances (TCD) and has been widely validated in fracture and fatigue analysis in many materials. However, it has never been used in EAC process assessment. The resulting methodology is validated by testing C(T) notched specimens of X80 and S420 steels subjected to aggressive environments under hydrogen embrittlement conditions. The parameters of the TCD have been obtained by finite element simulations, and the results reveal that the PM accurately predicts the crack propagation onset condition (K N IEAC), as well as the evolution of the apparent EAC crack propagation threshold of the material. The study has been completed with an exhaustive analysis of the fracture surfaces to determine the failure mechanisms using scanning electron microscopy (SEM).

show abstract

Cost of corrosion

Cited by 258 publications

References 2 publications

New 8-Hydroxyquinoline-Bearing Quinoxaline Derivatives as Effective Corrosion Inhibitors for Mild Steel in HCl: Electrochemical and Computational Investigations

New 8-Hydroxyquinoline-Bearing Quinoxaline Derivatives as Effective Corrosion Inhibitors for Mild Steel in HCl: Electrochemical and Computational Investigations

Qualitative Comparison of 2D and 3D Atmospheric Corrosion Detection Methods

Prediction of crack propagation thresholds in notched steels subjected to environmentally assisted cracking: An approach from the theory of critical distances

Contact Info

Product

Resources

About