Electrochemical studies on the alternating current corrosion of mild steel under cathodic protection condition in marine environments

Kim, Dae-Kyeong; Muralidharan, S.; Ha, Taehyun; Bae, Jeong-Hyo; Ha, Yoon‐Cheol; Lee, Hyun-Goo; Scantlebury, J.D.

doi:10.1016/j.electacta.2006.01.054

Cited by 91 publications

(39 citation statements)

References 11 publications

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“…This is due to the absorption of water molecules and chloride ions on the steel surface causing breakdown of the oxide film. Corrosion mechanisms retrieved from these results are in agreement with the interpretation provided by others [12,13]. Increasing the surface roughness shifted the corrosion potential to more noble direction; however, the corrosion current density decreased.…”

Section: Discussionsupporting

confidence: 81%

Corrosion of mild steel and 316L austenitic stainless steel with different surface roughness in sodium chloride saline solutions

Abosrra

Ashour

Mitchell

et al. 2017

WIT Transactions on State-of-the-Art in Science and Engineering

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The corrosion behaviour of mild steel and 316L austenitic stainless steel was investigated in saline solution containing 1 and 3% NaCl. Specimens with surface roughness of 200, 600 grit emery paper and 1 μm diamond paste were investigated. The anodic polarization measurement technique was performed at a scan rate of 1 mV/s for a fixed period of 1 hour. Experimental results revealed that chloride ions have a significant effect on the corrosion behaviour of both steels as expected. As the surface roughness of 316L stainless steel increased, the breakdown potential (Ebreak), the free corrosion potential (E corr ) and the width of passivity decreased, hence corrosion rate increased. However, in the case of mild steel specimens, improving surface finish led to shifts in corrosion potential to more noble states and increased the corrosion rate. Metallographic examination of corroded specimens after electrochemical corrosion tests confirmed that the breakdown of the passive region was due to pitting corrosion.

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Section: Discussionsupporting

confidence: 81%

Corrosion of mild steel and 316L austenitic stainless steel with different surface roughness in sodium chloride saline solutions

Abosrra

Ashour

Mitchell

et al. 2017

WIT Transactions on State-of-the-Art in Science and Engineering

View full text Add to dashboard Cite

show abstract

“…This is due to the absorption of water molecules and chloride ions on the steel surface causing breakdown of the oxide film. Corrosion mechanisms retrieved from these results are in agreement with the interpretation provided by others [12,13]. Increasing the surface roughness shifted the corrosion potential in a more noble direction; however the corrosion current density decreased.…”

Section: Discussionsupporting

confidence: 81%

Corrosion of mild steel and 316L austenitic stainless steel with different surface roughness in sodium chloride saline solutions

Abosrra¹,

Ashour²,

Mitchell³

et al. 2009

Simulation of Electrochemical Processes III

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The corrosion behaviour of mild steel and 316L austenitic stainless steel was investigated in saline solution containing 1 and 3%NaCl. Specimens with surface roughness of 200, 600 grit emery paper and 1μm diamond paste were investigated. The anodic polarization measurement technique was performed at a scan rate of 1mV/s for a fixed period of 1 hour. The experimental results revealed that chloride ions have a significant effect on the corrosion behaviour of both steels as expected. As the surface roughness of 316L stainless steel increased, the breakdown potential (E break ), the free corrosion potential (E corr ) and the width of passivity decreased, hence the corrosion rate increased. However, in the case of mild steel specimens, improving surface finish lead to shifts in the corrosion potential to more noble states and increased the corrosion rate. Metallographic examination of corroded specimens after electrochemical corrosion tests confirmed that the breakdown of the passive region was due to pitting corrosion.

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“…, the protective film consists of Fe 2+ -PVP complex and Zn(OH) 2 ; it is found to be UV-fluorescent Poly(styrenesulphonic acid)-doped polyaniline has been synthesised and the influence of this polymeric compound on the inhibition of corrosion of mild steel in 1M HCI has been investigated using weight loss measurements, galvanostatic polarisation studies, electropermeation studies and a.c. impedance measurements [12]. The polymer acts predominantly as an anodic inhibitor.…”

Section: +mentioning

confidence: 99%

“…Among the several methods of corrosion control such as cathodic protection [1,2], anodic protection [3], coating [4] and alloying, the use of chemical inhibitors is often considered as the most effective and practical method of corrosion prevention. A corrosion inhibitor is a chemical additive which when added to a corrosive aqueous environment reduces the rate of metal wastage.…”

Section: Introductionmentioning

confidence: 99%

Polymers as Corrosion Inhibitors for Metals in Different Media - A Review

Umoren¹

2009

TOCORRJ

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Several works have been done and more are on the pipeline on the influence of organic compounds containing polar functions on the corrosion inhibition of metals in various aqueous media. Corrosion inhibition by such compounds is generally attributed to their adsorption on the metal/solution interface. The specific action of an inhibitor depends on the nature of its interaction with metal surface, which causes a change in either mechanism of the electrochemical corrosion process or in the surface area available for the process. Thus, factors such as physiochemical properties of the inhibitors, the nature and surface charge of the metal, solution composition and pH are important considerations. Polymers function as corrosion inhibitors because of their ability to form complexes through their functional groups with metal ions which occupy large area and by so doing blanket the metal surface from aggressive anions present in solution.

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Electrochemical studies on the alternating current corrosion of mild steel under cathodic protection condition in marine environments

Cited by 91 publications

References 11 publications

Corrosion of mild steel and 316L austenitic stainless steel with different surface roughness in sodium chloride saline solutions

Corrosion of mild steel and 316L austenitic stainless steel with different surface roughness in sodium chloride saline solutions

Corrosion of mild steel and 316L austenitic stainless steel with different surface roughness in sodium chloride saline solutions

Polymers as Corrosion Inhibitors for Metals in Different Media - A Review

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