Variations of galvanic currents and corrosion forms of 2024/Q235/304 tri-metallic couple with multivariable cathode/anode area ratios: Experiments and modeling

Shi, Linjun; Song, Yingwei; Zhao, Pingping; Wang, Haitao; Dong, Kaihui; Shan, Dayong; Han, En‐Hou

doi:10.1016/j.electacta.2020.136947

Cited by 26 publications

(9 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the Butler-Volmer equation and mixed potential theory, the mathematical model can be expressed by Shi et al [43] :…”

Section: The Modeling Resultsmentioning

confidence: 99%

Micro‐galvanic corrosion of duplex stainless steel annealed at different temperatures evaluated by experiments and a numerical simulation model

Cao

2022

Materials & Corrosion

View full text Add to dashboard Cite

In this study, micro-galvanic corrosion of SAF 2205 duplex stainless steel (DSS) annealed at different temperatures with different phase ratios (α/γ) in a 1 M H 2 SO 4 + 1 M NaCl solution is analyzed by zero resistance ammeter (ZRA), immersion and numerical simulation model. COMSOL Multiphysics is used to solve the numerical simulation model and predict the local current density, potential distribution, and morphology of DSS annealed at different temperatures with different phase ratios. The modeling results are in good agreement with the immersion test results, which indicate that the microgalvanic corrosion depth of SAF 2205 DSS annealed at different temperatures initially decreases and then increases with the increase in the phase ratios (α/γ). The best micro-galvanic corrosion resistance is obtained at an annealing temperature of 1100°C.

show abstract

“…According to the Butler-Volmer equation and mixed potential theory, the mathematical model can be expressed by Shi et al [43] :…”

Section: The Modeling Resultsmentioning

confidence: 99%

Micro‐galvanic corrosion of duplex stainless steel annealed at different temperatures evaluated by experiments and a numerical simulation model

Cao

2022

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…In detail, the titanium alloy maintains a consistent cathodic surface area, while the anodic area of carbon steel varies. This variation leads to a fluctuating anodic-to-cathodic area ratio, which is a crucial factor in galvanic corrosion [45][46][47][48]. The electrochemical principle that governs this behavior is based on the fact that the corrosion rate through the galvanic couple is a function of the surface area of both the anode and cathode.…”

Section: Impact Of Thickness Ratio On Corrosion Ratementioning

confidence: 99%

A Study on the Influence of Different Defect Types on the Corrosion Behavior of Q235/TA2 Composite Plates in a Marine Environment

Jiang,

Li,

Wang

et al. 2024

Metals

View full text Add to dashboard Cite

The structural design of steel–titanium composite plates significantly affects their corrosion resistance. To investigate the impact of defects of different shapes and sizes on the corrosion behavior of steel–titanium composite plates, this study designed six types of defects and conducted a series of characterization tests. The results showed that due to the galvanic interaction between carbon steel and titanium alloy, small defects initially accelerate corrosion, resulting in 50% to 200% more corrosion weight loss compared to large defects. However, in the later stages of immersion, the corrosion rate of small defects decreased by up to 35%, which was attributed to the accumulation of protective corrosion products. Additionally, there is an inverse relationship between the corrosion rate and the thickness ratio of the composite plate. The reduction in the area of Q345B also results in additional corrosion loss of up to 32%.

show abstract

“…The anodic corrosion current density is proportional to the area ratio of negative and positive electrodes. When the situation of "large cathode, small anode" occurs, the corrosion of anode is often more serious [49].…”

Section: Geometric Characteristics Of Galvanic Pairmentioning

confidence: 99%

“…It is of great significance to explore the mechanism and process of complex galvanic corrosion of aluminum alloy [58]. Shi et al [49] used array electrode technology to explore the galvanic corrosion behavior of trimetals and found that the dielectric environment in 3.5 wt.% NaCl solution had a high conductivity, and the spatial arrangement of electrodes had little impact on the galvanic corrosion of trimetals. Therefore, a new splice array electrode was needed to be designed for measurement.…”

Section: Wire Beam Electrodes (Wbe) Technologymentioning

confidence: 99%

A Review of Research on Galvanic Corrosion of Aluminum Alloys

Zhu¹,

Leng²,

Jin³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

View full text Add to dashboard Cite

When aluminum alloys are coupled with dissimilar materials, they often act as corrosion anodes and are suscepted to accelerated corrosion. Therefore, deepening our knowledge of such corrosion phenomena, related mechanisms, and elaborating new prediction model is of great theoretical and practical significance. In this paper, such mechanisms are explained from both macroscopic and microscopic points of view by considering several aspects such as the second phase particle type, grain size, and environmental ions. More specifically, different perspectives on such a problem are elaborated, which take into account: the properties of the coupling pair materials, geometrical characteristics, environmental media characteristics, the corrosion regularity of different types of aluminum alloys, the influence of area ratio on anode corrosion current density, the interference of the solution primary ions represented by Cl-and the accompanying ions represented by Al 3+ . A review is also conducted of the standard test methods used in the study of aluminum alloys galvanic corrosion and of research methods such as the Wire Beam Electrodes Technology (WBE), the Scanning Kelvin Probe Force Microscopy (SKPFM) technology. Finally, three kinds of inhibition technologies are discussed, including the anodic oxidation treatment, the corrosion inhibitor treatment and the coating protection method.

show abstract

Variations of galvanic currents and corrosion forms of 2024/Q235/304 tri-metallic couple with multivariable cathode/anode area ratios: Experiments and modeling

Cited by 26 publications

References 41 publications

Micro‐galvanic corrosion of duplex stainless steel annealed at different temperatures evaluated by experiments and a numerical simulation model

Micro‐galvanic corrosion of duplex stainless steel annealed at different temperatures evaluated by experiments and a numerical simulation model

A Study on the Influence of Different Defect Types on the Corrosion Behavior of Q235/TA2 Composite Plates in a Marine Environment

A Review of Research on Galvanic Corrosion of Aluminum Alloys

Contact Info

Product

Resources

About