Effect of Chloride on the Pitting Corrosion of Carbon Steel in Alkaline Solutions

Jie Qiu; Yakun Zhu; Yi Xu; Yanhui Li; Feixiong Mao; Angjian Wu; Digby D. Macdonald

doi:10.1149/1945-7111/ac580c

Effect of Chloride on the Pitting Corrosion of Carbon Steel in Alkaline Solutions

Jie Qiu
, Yakun Zhu
, Yi Xu
, Yanhui Li
, Feixiong Mao
, Angjian Wu
, Digby D. Macdonald

School of Energy and Power Engineering

University of California at Berkeley
Xi'an Jiaotong University
CAS - Ningbo Institute of Material Technology and Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The effect of chloride concentration on the passivity breakdown of carbon steel in deaerated pH = 13.5 alkaline solution was investigated. The results show that chloride plays an important role for the pitting corrosion of carbon steel. When NaCl ≤ 1 M, the carbon steel is passive but for 1 M < NaCl < 2 M, the carbon steel transfers from passive to passivity breakdown. When NaCl ≥ 2 M, passive film breakdown occurs and the passivity breakdown potential (Eb) of carbon steel is linearly-dependent on the logarithm of the chloride activity in the alkaline solution. As predicted by the PDM, the near-normal distribution of Eb is well indicated by the near straight line in the cumulative distribution probability. The analysis in this study gives us a method to calculate the Eb of carbon steel in alkaline solution and its distribution for any given chloride concentration.

Original language	English
Article number	031501
Journal	Journal of the Electrochemical Society
Volume	169
Issue number	3
DOIs	https://doi.org/10.1149/1945-7111/ac580c
State	Published - Mar 2022

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10.1149/1945-7111/ac580c

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title = "Effect of Chloride on the Pitting Corrosion of Carbon Steel in Alkaline Solutions",

abstract = "The effect of chloride concentration on the passivity breakdown of carbon steel in deaerated pH = 13.5 alkaline solution was investigated. The results show that chloride plays an important role for the pitting corrosion of carbon steel. When NaCl ≤ 1 M, the carbon steel is passive but for 1 M < NaCl < 2 M, the carbon steel transfers from passive to passivity breakdown. When NaCl ≥ 2 M, passive film breakdown occurs and the passivity breakdown potential (Eb) of carbon steel is linearly-dependent on the logarithm of the chloride activity in the alkaline solution. As predicted by the PDM, the near-normal distribution of Eb is well indicated by the near straight line in the cumulative distribution probability. The analysis in this study gives us a method to calculate the Eb of carbon steel in alkaline solution and its distribution for any given chloride concentration.",

author = "Jie Qiu and Yakun Zhu and Yi Xu and Yanhui Li and Feixiong Mao and Angjian Wu and Macdonald, \{Digby D.\}",

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doi = "10.1149/1945-7111/ac580c",

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TY - JOUR

T1 - Effect of Chloride on the Pitting Corrosion of Carbon Steel in Alkaline Solutions

AU - Qiu, Jie

AU - Zhu, Yakun

AU - Xu, Yi

AU - Li, Yanhui

AU - Mao, Feixiong

AU - Wu, Angjian

AU - Macdonald, Digby D.

PY - 2022/3

Y1 - 2022/3

N2 - The effect of chloride concentration on the passivity breakdown of carbon steel in deaerated pH = 13.5 alkaline solution was investigated. The results show that chloride plays an important role for the pitting corrosion of carbon steel. When NaCl ≤ 1 M, the carbon steel is passive but for 1 M < NaCl < 2 M, the carbon steel transfers from passive to passivity breakdown. When NaCl ≥ 2 M, passive film breakdown occurs and the passivity breakdown potential (Eb) of carbon steel is linearly-dependent on the logarithm of the chloride activity in the alkaline solution. As predicted by the PDM, the near-normal distribution of Eb is well indicated by the near straight line in the cumulative distribution probability. The analysis in this study gives us a method to calculate the Eb of carbon steel in alkaline solution and its distribution for any given chloride concentration.

AB - The effect of chloride concentration on the passivity breakdown of carbon steel in deaerated pH = 13.5 alkaline solution was investigated. The results show that chloride plays an important role for the pitting corrosion of carbon steel. When NaCl ≤ 1 M, the carbon steel is passive but for 1 M < NaCl < 2 M, the carbon steel transfers from passive to passivity breakdown. When NaCl ≥ 2 M, passive film breakdown occurs and the passivity breakdown potential (Eb) of carbon steel is linearly-dependent on the logarithm of the chloride activity in the alkaline solution. As predicted by the PDM, the near-normal distribution of Eb is well indicated by the near straight line in the cumulative distribution probability. The analysis in this study gives us a method to calculate the Eb of carbon steel in alkaline solution and its distribution for any given chloride concentration.

UR - https://www.scopus.com/pages/publications/85126291387

U2 - 10.1149/1945-7111/ac580c

DO - 10.1149/1945-7111/ac580c

M3 - 文章

AN - SCOPUS:85126291387

SN - 0013-4651

VL - 169

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 3

M1 - 031501

ER -

Effect of Chloride on the Pitting Corrosion of Carbon Steel in Alkaline Solutions

Abstract

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