A Theoretical Analysis of the Electrochemical Noise during the Induction Period of Pitting Corrosion in Passive Metals: III . The Current Noise Associated with Halide Island Formation on the Passive Film

Abstract A new approach for the measurement of noise resistance based on the transient behavior of pitting corrosion is presented. Potential noise and current transients have been recognized as a characteristic behavior of pitting corrosion. This new approach uses the transient information present during corrosion as a way to estimate the noise resistance of coated metals directly. Computer simulation and analytical results are presented, indicating that the new technique can be applied to the problem of noise resistance estimation. This new approach was applied to experimental electrochemical noise data obtained with commercial electrochemical impedance spectroscopy (EIS)/electrochemcial noise measurement (ENM) equipment.

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Improvement of pitting corrosion resistance of a biomedical grade 316LVM stainless steel by electrochemical modification of the passive film semiconducting properties

Electrochemistry Communications ◽

10.1016/j.elecom.2006.08.039 ◽

2007 ◽

Vol 9 (1) ◽

pp. 76-82 ◽

Cited By ~ 34

Author(s):

Abdullah Shahryari ◽

Sasha Omanovic

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Passive Film ◽

Pitting Corrosion ◽

Electrochemical Modification ◽

Pitting Corrosion Resistance ◽

Semiconducting Properties

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In-situ monitoring of pitting corrosion of Q235 carbon steel by electrochemical noise: Wavelet and recurrence quantification analysis

Journal of Electroanalytical Chemistry ◽

10.1016/j.jelechem.2020.114776 ◽

2020 ◽

Vol 879 ◽

pp. 114776

Author(s):

Zhen Zhang ◽

Xiaofeng Li ◽

Zhanyong Zhao ◽

Peikang Bai ◽

Bin Liu ◽

...

Keyword(s):

Carbon Steel ◽

Pitting Corrosion ◽

Electrochemical Noise ◽

Recurrence Quantification Analysis ◽

In Situ Monitoring ◽

Recurrence Quantification ◽

Quantification Analysis ◽

Q235 Carbon Steel

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Effect of the Flow Velocity on the Corrosion Behavior of UNS S41426 Stainless Steel in the Extremely Aggressive Oilfield Environment for the Tarim Area

CORROSION ◽

10.5006/2813 ◽

2020 ◽

Vol 76 (7) ◽

pp. 654-665 ◽

Cited By ~ 1

Author(s):

Yang Zhao ◽

Limin Chang ◽

Tao Zhang ◽

Junfeng Xie ◽

Yan Chen ◽

...

Keyword(s):

Stainless Steel ◽

Corrosion Rate ◽

Phase Boundary ◽

Flow Velocity ◽

Passive Film ◽

Corrosion Behavior ◽

Pitting Corrosion ◽

Defect Density ◽

Electrochemical Techniques ◽

Experimental Results

Effect of flow velocity on the passive film and pitting corrosion behavior of UNS S41426 stainless steel (SS) under the extreme oilfield environment was investigated using different techniques such as microscopy, nanoindentation, and electrochemical techniques. The experimental results show that the corrosion rate of UNS S41426 SS increased with velocity. The increase in flow velocity decreased the thickness and content of amorphous Cr(OH)3 (s) in the film. This in turn increased the density of phase boundary, resulting in a higher defect density. Thus, the UNS S41426 SS film became susceptible to breaking. Furthermore, the pitting had a higher susceptibility to grow to a larger size both in the vertical and horizontal directions with the increase in flow velocity.

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