Electrochemical noise measurements on stainless steel using a gelled electrolyte

Monrrabal, Gleidys; Huet, François; Bautista, A.

doi:10.1016/j.corsci.2018.12.004

Cited by 26 publications

(15 citation statements)

References 21 publications

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“…3). The zero resistance ammeter (ZRA) mode was adopted for detection, and the sampling frequency was 2 Hz [6,20]. The DC components in all the EN data were removed using a quintic polynomial fitting [21][22][23].…”

Section: En Measurement System and Experimentsmentioning

confidence: 99%

“…The electrochemical noise (EN) technique has been widely used in atmospheric corrosion detection because its detection equipment is simple and portable and can be used for remote continuous monitoring [3]. The application of EN technique requires proper data analysis [4][5][6], and the establishment of a reliable electrode system in the atmospheric environment [7,8]. The data analysis of EN can represent the characteristic parameters of the corrosion type and corrosion degree of metal materials through time domain analysis, frequency domain analysis, and time-frequency analysis [9,10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quantification of the Atmospheric Corrosion of 304 and 2205 Stainless Steels Using Electrochemical Probes Based on Thevenin Electrochemical Equivalent Circuit Model

Zhu

Song

et al. 2020

Trans. Tianjin Univ.

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Stainless steel (SS) is one of the most widely used engineering materials in marine engineering. However, its corrosion in the marine atmospheric environment due to the high concentration of Cl − is a problem. The SS corrosion is a threat to the development and security of marine industry; therefore, evaluating the corrosion resistance of SSs is necessary. In this work, atmospheric corrosion detection probes based on a symmetrical electrode system were used to study the corrosion behaviors of 304 SS and 2205 duplex stainless steel (DSS) in a simulated marine atmosphere. A theoretical model for electrochemical noise (EN) data analysis based on the Thevenin electrochemical equivalent circuit (EEC) model was established. The relationship between the EN characteristic parameters and the corrosion rate was obtained. The Thevenin EEC model analysis showed that the relationship between the noise resistance (R n ), the noise impedance [R sn (f)], and the impedance modulus (|Z(f)|) was R n ≈ R sn = √ 3 �Z(f )� . Thus, R n and R sn can be used as indicators for quantitative corrosion evaluation. The results of EN detection for the 304 SS and 2205 DSS showed that in a simulated marine atmospheric environment, the passive films on the two SSs were relatively intact at the initial exposure stage, and their dissolution rates were slow. The corrosion resistance of the 2205 DSS was higher than that of the 304 SS. With the deposition of Cl − on the SS surface, pitting was initiated and the dissolution rate increased. The pitting initiation process on the SS surface was random, and part of the active pores could be repassivated.

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Section: En Measurement System and Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantification of the Atmospheric Corrosion of 304 and 2205 Stainless Steels Using Electrochemical Probes Based on Thevenin Electrochemical Equivalent Circuit Model

Zhu

Song

et al. 2020

Trans. Tianjin Univ.

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“…Another possible replacement for the standard setup are gel electrolytes. Several studies on bare and coated bronzes have been conducted with gel based on agar [ 21 , 22 , 23 , 24 ] containing artificial rain solution. It has been shown that in such medium good electrochemical response is achieved.…”

Section: Introductionmentioning

confidence: 99%

An Electrochemical and Spectroscopic Study of Surfaces on Bronze Sculptures Exposed to Urban Environment

et al. 2021

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Polluted urban environment enhances dissolution of patina and underlying bronze material of recent and historical bronze sculptures exposed outdoors. In this work, two bronze statues, situated in one of the most polluted Croatian cities, were examined in order to characterize composition of patina and its electrochemical stability. The composition of patina on several positions on each sculpture was determined by EDS, Raman spectroscopy, and FTIR measurements. Electrochemical impedance spectroscopy measurements were conducted in order to evaluate the corrosion stability of both patina and underlying bronze. Results obtained in this work show that the two examined bronze sculptures were covered with patina layer that was mainly composed of copper sulfides and sulphates, which is in accordance with the high concentrations of H2S and SO2 in the atmosphere. However, the variations in the appearance of FTIR and Raman spectra revealed that the amount of each species differed from spot to spot, as well as the fact that other compounds, such as carbonates, were present at some areas. This difference in patina composition was reflected in electrochemical behavior as observed by electrochemical impedance spectroscopy.

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“…[13][14][15][16][17][18][19][20][21] Moreover, a significant amount of information considering the localized corrosion is provided by this technique as compared with the traditional ones. [22][23][24][25][26][27] There are a limited number of instances of employment of EN analytic method for magnesium alloys. [28] EN assessments are commonly performed using two working electrodes (WEs) whose connection is provided through a zero-resistance ammeter (ZRA), which monitors the coupling current of inter-WEs.…”

Section: Introductionmentioning

confidence: 99%

“…[ 13–21 ] Moreover, a significant amount of information considering the localized corrosion is provided by this technique as compared with the traditional ones. [ 22–27 ] There are a limited number of instances of employment of EN analytic method for magnesium alloys. [ 28 ]…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the localized corrosion on Mg electrode surface by electrochemical noise technique

Naghizade

Hosseini

Shahidi

et al. 2020

Materials & Corrosion

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The symmetrical and asymmetrical electrodes made of Mg were studied in 0.1-M NaCl electrolyte adjusted at pH 12. The statistical and wavelet methods were employed for analyzing the electrochemical current noise (ECN) signals. The asymmetric configuration was used for electrochemical detection of filiform corrosion on Mg electrode. The real time scale of the dominant transients of the asymmetric electrodes was detected on the basis of the maximum peak in the SDPS plots. The SDPS values of the real time scale crystals of the ECN signals resulting from asymmetrical electrodes increased with the increase in immersion time due to the onset of filiform corrosion.

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Electrochemical noise measurements on stainless steel using a gelled electrolyte

Cited by 26 publications

References 21 publications

Quantification of the Atmospheric Corrosion of 304 and 2205 Stainless Steels Using Electrochemical Probes Based on Thevenin Electrochemical Equivalent Circuit Model

Quantification of the Atmospheric Corrosion of 304 and 2205 Stainless Steels Using Electrochemical Probes Based on Thevenin Electrochemical Equivalent Circuit Model

An Electrochemical and Spectroscopic Study of Surfaces on Bronze Sculptures Exposed to Urban Environment

Evaluation of the localized corrosion on Mg electrode surface by electrochemical noise technique

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