Results 251 to 260 of about 1,113,785 (345)

AC Corrosion of Cathodically Protected Pipelines – a Summary

CORROSION 2021, 2021
Abstract This paper presents a summary of the results obtained during 3 years of PhD studies on “AC Corrosion of Cathodically Protected Pipelines” at the Technical University of Denmark (DTU)1, which was finalized in October 2018 and defended in January 2019.1 Amongst the findings are: An improved understanding of AC corrosion as ...
Andreas Junker Olesen
openaire   +2 more sources

Corrosion Rate Measurement and Oxide Investigation of AC Corrosion at Varying AC/DC Current Densities

Corrosion, 2019
Corrosion of pipelines under cathodic protection (CP) caused by induced alternating current (AC) is highly dependent on the cathodic current density. This study uses electrical resistance probes to produce a corrosion rate map of the AC/DC current density domain, using a galvanostatic CP system subject to varying AC voltage interference levels.
Andreas Junker Olesen, Knud Dideriksen, Lars Vendelbo Nielsen, Per Møller   +3 more
openaire   +2 more sources

AC Corrosion at Coating Defect on Pipelines

Corrosion, 2014
In this work, the effect of the size and geometrical shape of coating defects on pipeline corrosion under alternating current (AC) interference in a deoxygenated, near-neutral pH bicarbonate solution was studied by direct current (DC) potential analysis, polarization curve measurements, and surface characterization.
D. Kuang, Y.F. Cheng
openaire   +2 more sources

The AC Corrosion Mechanisms and Models: A Review

Corrosion, 2019
In this paper, the mechanisms and models of alternating current (AC) corrosion are critically reviewed to provide a systematic understanding for the further development of AC corrosion theory. None of the proposed mechanisms could give a full explanation of the AC corrosion behaviors, and no technical consensus has been reached.
Shouxin Zhang, Zili Li, Chao Yang, Jinxin Gou   +3 more
openaire   +2 more sources

AC corrosion of steel pipeline under cathodic protection: A state‐of‐the‐art review

Materials and Corrosion, 2023
By the advancement of the oil, electricity, and transportation industries, an increasing number of oil and gas pipelines were buried alongside high‐voltage alternating current (AC) transmission lines and electrified railways.
Emadoddin Majdabadi Farahani, Yuhan Su, Xiao Chen, Hao Wang, Tyler R. Laughorn, Frank Onesto, Qixin Zhou, Qindan Huang   +7 more
semanticscholar   +1 more source

Research on dynamic AC corrosion behavior of X65 Pipeline Steel under cathodic protection

Corrosion, 2023
An indoor corrosion simulation experiment device was built to explore the influence of dynamic AC interference on the corrosion behavior of pipeline steel under different cathodic protection (CP) levels.
Le Chen, Yanxia Du, Yi Liang, Nianpei Tian, Zhenhong Zhu, Lei Zhang   +5 more
semanticscholar   +1 more source

AC Corrosion at Other Frequencies Part B: Laboratory Investigations

Corrosion, 2021
AC corrosion on cathodically protected pipelines is commonly experienced due to interference from high voltage transmission lines at a frequency of 50 or 60 Hz.
Andreas Junker Olesen, W. Fieltsch, Lars Vendelbo Nielsen, Fation Shahinas   +3 more
semanticscholar   +1 more source

Machine learning approach to AC corrosion assessment under cathodic protection

Materials and Corrosion, 2022
Data mining was introduced and 178 sets of alternating current (AC) corrosion data were collected from published data and our research group. The AC current density (JAC), direct current (DC), current density (JDC), the ratio of AC/DC current density ...
Shuaijie Ma, Yanxia Du, Yi Liang, Shasha Wang, Yanjing Su   +4 more
semanticscholar   +1 more source

Discussion on AC Corrosion Rate Assessment and Mechanism for Cathodically Protected Pipelines

, 2021
Although a lot of AC corrosion failure cases and research work on cathodically protected pipelines have been reported, the mechanism of AC corrosion process has not been completely understood and there still exist many debates on AC corrosion assessment ...
Yanxia Du, Yi Liang, D. Tang, Sili Xie
semanticscholar   +1 more source

Study on the correlation between passive film and AC corrosion behavior of 2507 super duplex stainless steel in simulated marine environment

, 2020
The correlation between passive film and AC corrosion behavior of 2507 super duplex stainless steel (SDSS) has been investigated in NaCl solution under various AC current densities using the polarization curve, EIS test, Mott-Schottky curve and with ...
M. Zhu, Qiang Zhang, Yongfeng Yuan, Shao-yi Guo, Yi-zhong Huang   +4 more
semanticscholar   +1 more source