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Mitigation Strategies for AC Corrosion at Higher Frequencies
Materials Performance, 2023A 2018 field investigation on a nominal pipe size 6 liquids pipeline identified a rectifier with significant 120 Hz ripple as the source of the elevated current densities, which resulted in corrosion anomalies detected via in-line inspections. Further field and laboratory investigations were performed to quantify the risks of alternating current (AC ...
Wolfgang Fieltsch, J. Scott Farquharson
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Laboratory and Field Investigation of the Effect of the Chemical Environment on AC Corrosion
Corrosion, 2018AC corrosion is dependent on both AC and DC current densities, but only little is known about the effect of the chemical environment. In this paper, laboratory soil-box experiments are made for a better understanding of the effect of specific chemical ...
Andrea Junker +3 more
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Challenges in Implementing SP21424-2018 AC Corrosion Criteria.
CORROSION 2021, 2021Abstract The new NACE Standard SP21424-20181 provides a set of simple criteria for assessing the risk of AC corrosion on existing collocations between powerlines and cathodically protected pipelines. However, the task of developing design criteria for new collocations is left to the pipeline operators.
S.M Segall +5 more
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Effects of AC-Interference on Passive Metals Corrosion
CORROSION 2011, 2011Abstract AC-induced corrosion continues to be a controversial subject and a full agreement on influencing parameters and mechanism has not yet been achieved. The influence of AC-induced interference on the localized corrosion resistance of passive metals is discussed on the basis of laboratory test results.
ORMELLESE, MARCO +2 more
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Application of AC-SECM in Corrosion Science: Inhibitors for Corrosion
ECS Meeting Abstracts, 2009Abstract not Available.
Maike Paehler +4 more
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Perturbation method analysis of AC-induced corrosion
Corrosion Science, 2008A nonlinear model for corrosion of metals subjected to alternating voltage (AV) induced corrosion that includes the elements corresponding to the polarization resistance, the double layer capacitance and the solution resistance is developed. The results show that corrosion of materials under AC conditions is greatly enhanced by the peak potential and ...
Rong Zhang +2 more
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AC Corrosion Control: When Too Much Cathodic Protection Might Just Be a Bad Thing!
Corrosion, 2018Industry guidance such as European Standard EN-15280(1) and applied research by Pipeline Research Council International (PRCI)(2) highlight the interaction cathodic direct currents can have on pipeline corrosion influenced by alternating currents ...
Dale D. Lindemuth, D. Crabtree
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Fractal characteristics of AC corrosion morphology of X80 pipeline steel in coastal soil solution
Anti-Corrosion Methods and Materials, 2019Purpose Pipelines are seriously corroded due to the close distance between pipelines and high voltage transmission lines. The purpose of this paper is to study the influence of alternating current (AC) on corrosion behavior of X80 pipeline steel in ...
Yu Fu, J. Kou, C. Du
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The corrosion damage of an organic coating accelerated by different AC-DC-AC tests
, 2021The corrosion damage of an organic coating system was accelerated by different AC-DC-AC tests in comprison with neutral salt spray (NSS) and natural immersionn.
Yuqing Xu +3 more
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Research on the Effects of Environmental Parameters on AC Corrosion Behavior
Corrosion, 2018AC corrosion experiments were carried out in two kinds of typical soil simulated environments with different contents of calcium ion (Ca2+), magnesium ion (Mg2+) and sodium ion (Na+) to study the effects of environmental and cathodic protection ...
Yanxia Du +3 more
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