Corrosion rate measurement and oxide investigation of AC corrosion at varying AC/DC current densities

Andreas Junker Olesen; Knud Dideriksen; Lars Vendelbo Nielsen; Per Møller

doi:10.5006/3168

Corrosion rate measurement and oxide investigation of AC corrosion at varying AC/DC current densities

Andreas Junker Olesen, Knud Dideriksen, Lars Vendelbo Nielsen, Per Møller

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Publikation: Bidrag til tidsskrift › Artikel › Forskning › peer review

16 Citationer (Scopus)

Resumé

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. Two corrosion domains are recognized at high or low CP, respectively. X-ray photoelectron spectroscopy is utilized for analysis of surface oxides, being primarily magnetite and ferrous hydroxide. The results are discussed in a Pourbaix diagram context.

Originalsprog	Engelsk
Sider (fra-til)	1026-1033
Antal sider	8
Tidsskrift	Corrosion
Vol/bind	75
Udgave nummer	9
DOI	https://doi.org/10.5006/3168
Status	Udgivet - sep. 2019

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10.5006/3168

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title = "Corrosion rate measurement and oxide investigation of AC corrosion at varying AC/DC current densities",

abstract = "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. Two corrosion domains are recognized at high or low CP, respectively. X-ray photoelectron spectroscopy is utilized for analysis of surface oxides, being primarily magnetite and ferrous hydroxide. The results are discussed in a Pourbaix diagram context.",

keywords = "Alternating current (AC), Cathodic protection, Corrosion rate, Depolarization, Passivity, Potential E-pH diagram, X-ray photoelectron spectroscopy",

author = "Olesen, {Andreas Junker} and Knud Dideriksen and Nielsen, {Lars Vendelbo} and Per M{\o}ller",

note = "Publisher Copyright: {\textcopyright} 2019 NACE International.",

year = "2019",

month = sep,

doi = "10.5006/3168",

language = "English",

volume = "75",

pages = "1026--1033",

journal = "Corrosion",

issn = "0010-9312",

publisher = "National Association of Corrosion Engineers",

number = "9",

}

TY - JOUR

T1 - Corrosion rate measurement and oxide investigation of AC corrosion at varying AC/DC current densities

AU - Olesen, Andreas Junker

AU - Dideriksen, Knud

AU - Nielsen, Lars Vendelbo

AU - Møller, Per

PY - 2019/9

Y1 - 2019/9

N2 - 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. Two corrosion domains are recognized at high or low CP, respectively. X-ray photoelectron spectroscopy is utilized for analysis of surface oxides, being primarily magnetite and ferrous hydroxide. The results are discussed in a Pourbaix diagram context.

AB - 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. Two corrosion domains are recognized at high or low CP, respectively. X-ray photoelectron spectroscopy is utilized for analysis of surface oxides, being primarily magnetite and ferrous hydroxide. The results are discussed in a Pourbaix diagram context.

KW - Alternating current (AC)

KW - Cathodic protection

KW - Corrosion rate

KW - Depolarization

KW - Passivity

KW - Potential E-pH diagram

KW - X-ray photoelectron spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85074952188&partnerID=8YFLogxK

U2 - 10.5006/3168

DO - 10.5006/3168

M3 - Article

AN - SCOPUS:85074952188

SN - 0010-9312

VL - 75

SP - 1026

EP - 1033

JO - Corrosion

JF - Corrosion

IS - 9

ER -

Corrosion rate measurement and oxide investigation of AC corrosion at varying AC/DC current densities

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