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Effects of the IR Drop on the Electrochemical Corrosion of X80 Pipeline Steel in Different Solutions.

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Title: Effects of the IR Drop on the Electrochemical Corrosion of X80 Pipeline Steel in Different Solutions.
Authors: Bai, Yunlong, Xu, Jin, Wei, Boxin, Sun, Cheng
Source: Coatings (2079-6412); Sep2022, Vol. 12 Issue 9, pN.PAG-N.PAG, 18p
Subject Terms: ELECTROLYTIC corrosion, PIPELINE corrosion, ALKALINE solutions, STEEL, CURVE fitting, TEST methods
Abstract: Polarization curves are popularly used in many investigations; however, some wrong results are obtained when inexperienced researchers do not deeply understand electrochemical processes. In this study, the effects of the IR drop (Deviation due to I (current) and R (resistance)) and scanning direction on polarization curves were investigated. Three different test methods were used to test the polarization curve of X80 pipeline steel in five kinds of solutions. The different scanning directions led to differences in the cathodic polarization curves. In addition, the effect of IR drop on the Tafel curve in acidic solutions is significantly greater than in neutral and alkaline solutions. There is a large effect of the IR drop on shapes and fitting results of polarization curves in acidic solutions, and the IR drop must be considered for the fitting of curves. Scanning direction has an influence on the shape of polarization curves when a layer of corrosion products is formed on the steel surface, and a novel two-electrode coupon was introduced to solve this problem. [ABSTRACT FROM AUTHOR]
Copyright of Coatings (2079-6412) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Effects of the IR Drop on the Electrochemical Corrosion of X80 Pipeline Steel in Different Solutions.
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  Data: <searchLink fieldCode="AR" term="%22Bai%2C+Yunlong%22">Bai, Yunlong</searchLink><br /><searchLink fieldCode="AR" term="%22Xu%2C+Jin%22">Xu, Jin</searchLink><br /><searchLink fieldCode="AR" term="%22Wei%2C+Boxin%22">Wei, Boxin</searchLink><br /><searchLink fieldCode="AR" term="%22Sun%2C+Cheng%22">Sun, Cheng</searchLink>
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  Data: Coatings (2079-6412); Sep2022, Vol. 12 Issue 9, pN.PAG-N.PAG, 18p
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  Data: <searchLink fieldCode="DE" term="%22ELECTROLYTIC+corrosion%22">ELECTROLYTIC corrosion</searchLink><br /><searchLink fieldCode="DE" term="%22PIPELINE+corrosion%22">PIPELINE corrosion</searchLink><br /><searchLink fieldCode="DE" term="%22ALKALINE+solutions%22">ALKALINE solutions</searchLink><br /><searchLink fieldCode="DE" term="%22STEEL%22">STEEL</searchLink><br /><searchLink fieldCode="DE" term="%22CURVE+fitting%22">CURVE fitting</searchLink><br /><searchLink fieldCode="DE" term="%22TEST+methods%22">TEST methods</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Polarization curves are popularly used in many investigations; however, some wrong results are obtained when inexperienced researchers do not deeply understand electrochemical processes. In this study, the effects of the IR drop (Deviation due to I (current) and R (resistance)) and scanning direction on polarization curves were investigated. Three different test methods were used to test the polarization curve of X80 pipeline steel in five kinds of solutions. The different scanning directions led to differences in the cathodic polarization curves. In addition, the effect of IR drop on the Tafel curve in acidic solutions is significantly greater than in neutral and alkaline solutions. There is a large effect of the IR drop on shapes and fitting results of polarization curves in acidic solutions, and the IR drop must be considered for the fitting of curves. Scanning direction has an influence on the shape of polarization curves when a layer of corrosion products is formed on the steel surface, and a novel two-electrode coupon was introduced to solve this problem. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Coatings (2079-6412) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/coatings12091314
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 18
        StartPage: N.PAG
    Subjects:
      – SubjectFull: ELECTROLYTIC corrosion
        Type: general
      – SubjectFull: PIPELINE corrosion
        Type: general
      – SubjectFull: ALKALINE solutions
        Type: general
      – SubjectFull: STEEL
        Type: general
      – SubjectFull: CURVE fitting
        Type: general
      – SubjectFull: TEST methods
        Type: general
    Titles:
      – TitleFull: Effects of the IR Drop on the Electrochemical Corrosion of X80 Pipeline Steel in Different Solutions.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Bai, Yunlong
      – PersonEntity:
          Name:
            NameFull: Xu, Jin
      – PersonEntity:
          Name:
            NameFull: Wei, Boxin
      – PersonEntity:
          Name:
            NameFull: Sun, Cheng
    IsPartOfRelationships:
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          Dates:
            – D: 01
              M: 09
              Text: Sep2022
              Type: published
              Y: 2022
          Identifiers:
            – Type: issn-print
              Value: 20796412
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              Value: 12
            – Type: issue
              Value: 9
          Titles:
            – TitleFull: Coatings (2079-6412)
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