Electrochemical noise analysis in the frequency domain and determination of corrosion rates for SS-304 stainless steel

C. Cuevas-Arteaga; J. Porcayo-Calderón

doi:10.1016/j.msea.2006.07.078

Electrochemical noise analysis in the frequency domain and determination of corrosion rates for SS-304 stainless steel

C. Cuevas-Arteaga^*, J. Porcayo-Calderón

^*Corresponding author for this work

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

31 Scopus citations

Abstract

Studies of the corrosion evaluation of SS-304 stainless steel exposed in lithium bromide aqueous solution have been carried out applying the electrochemical noise technique and polarization curves, as well as the weight loss method. The test temperatures were ambient to 80 °C, and the exposure time was during 15 days. The main objective was to determine the corrosion rates and the type of corrosion that SS-304 suffers under the mentioned conditions, with the purpose of evaluating its application to heat pumps/transformers. Polarization curves revealed the formation of a passive film, which under increased temperature changed its protective properties. The electrochemical noise results suggested that at the test temperatures the type of corrosion was mixed or pitting corrosion. The noise resistance was calculated through statistical analysis, and then, the Stern-Geary equation and Faraday law were applied to determine mass loss, which was compared to that obtained from weight loss method. Two localized corrosion indicators were also obtained: pitting index (PI) and the coefficient of variation of current (CV), which were compared each other and interrelated with the noise signals and visual observations. To support the type of corrosion process, scanning electron microscopy (SEM) coupled with energy dispersive X-ray analyzer (EDX) was used to study the surface morphology of the corroded specimens and for determining qualitative analyses.

Original language	English
Pages (from-to)	439-446
Number of pages	8
Journal	Materials Science and Engineering A
Volume	435-436
DOIs	https://doi.org/10.1016/j.msea.2006.07.078
State	Published - 5 Nov 2006
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by PROMEP program from the Education Secretary of Mexico, through the number project: UAEMOR-EXB-01with reference no. 103.5/04/1360 granted to the first author, who thanks for this enormous support. Also, thanks are given to Carlos Limon from the Electrical Research Institute for his help in the preparation of the photos and for the spot welded of 80Cr–20Ni wire to the working electrodes. The authors acknowledge the support of Guadalupe Rodríguez and Georgina Blass from the IIE, for their support in atomic absorption analysis.

Keywords

Current time series
Electrochemical noise
Pitting
Resistance noise

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10.1016/j.msea.2006.07.078

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title = "Electrochemical noise analysis in the frequency domain and determination of corrosion rates for SS-304 stainless steel",

abstract = "Studies of the corrosion evaluation of SS-304 stainless steel exposed in lithium bromide aqueous solution have been carried out applying the electrochemical noise technique and polarization curves, as well as the weight loss method. The test temperatures were ambient to 80 °C, and the exposure time was during 15 days. The main objective was to determine the corrosion rates and the type of corrosion that SS-304 suffers under the mentioned conditions, with the purpose of evaluating its application to heat pumps/transformers. Polarization curves revealed the formation of a passive film, which under increased temperature changed its protective properties. The electrochemical noise results suggested that at the test temperatures the type of corrosion was mixed or pitting corrosion. The noise resistance was calculated through statistical analysis, and then, the Stern-Geary equation and Faraday law were applied to determine mass loss, which was compared to that obtained from weight loss method. Two localized corrosion indicators were also obtained: pitting index (PI) and the coefficient of variation of current (CV), which were compared each other and interrelated with the noise signals and visual observations. To support the type of corrosion process, scanning electron microscopy (SEM) coupled with energy dispersive X-ray analyzer (EDX) was used to study the surface morphology of the corroded specimens and for determining qualitative analyses.",

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author = "C. Cuevas-Arteaga and J. Porcayo-Calder{\'o}n",

note = "Funding Information: This work was supported by PROMEP program from the Education Secretary of Mexico, through the number project: UAEMOR-EXB-01with reference no. 103.5/04/1360 granted to the first author, who thanks for this enormous support. Also, thanks are given to Carlos Limon from the Electrical Research Institute for his help in the preparation of the photos and for the spot welded of 80Cr–20Ni wire to the working electrodes. The authors acknowledge the support of Guadalupe Rodr{\'i}guez and Georgina Blass from the IIE, for their support in atomic absorption analysis. ",

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AU - Cuevas-Arteaga, C.

AU - Porcayo-Calderón, J.

N1 - Funding Information: This work was supported by PROMEP program from the Education Secretary of Mexico, through the number project: UAEMOR-EXB-01with reference no. 103.5/04/1360 granted to the first author, who thanks for this enormous support. Also, thanks are given to Carlos Limon from the Electrical Research Institute for his help in the preparation of the photos and for the spot welded of 80Cr–20Ni wire to the working electrodes. The authors acknowledge the support of Guadalupe Rodríguez and Georgina Blass from the IIE, for their support in atomic absorption analysis.

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N2 - Studies of the corrosion evaluation of SS-304 stainless steel exposed in lithium bromide aqueous solution have been carried out applying the electrochemical noise technique and polarization curves, as well as the weight loss method. The test temperatures were ambient to 80 °C, and the exposure time was during 15 days. The main objective was to determine the corrosion rates and the type of corrosion that SS-304 suffers under the mentioned conditions, with the purpose of evaluating its application to heat pumps/transformers. Polarization curves revealed the formation of a passive film, which under increased temperature changed its protective properties. The electrochemical noise results suggested that at the test temperatures the type of corrosion was mixed or pitting corrosion. The noise resistance was calculated through statistical analysis, and then, the Stern-Geary equation and Faraday law were applied to determine mass loss, which was compared to that obtained from weight loss method. Two localized corrosion indicators were also obtained: pitting index (PI) and the coefficient of variation of current (CV), which were compared each other and interrelated with the noise signals and visual observations. To support the type of corrosion process, scanning electron microscopy (SEM) coupled with energy dispersive X-ray analyzer (EDX) was used to study the surface morphology of the corroded specimens and for determining qualitative analyses.

AB - Studies of the corrosion evaluation of SS-304 stainless steel exposed in lithium bromide aqueous solution have been carried out applying the electrochemical noise technique and polarization curves, as well as the weight loss method. The test temperatures were ambient to 80 °C, and the exposure time was during 15 days. The main objective was to determine the corrosion rates and the type of corrosion that SS-304 suffers under the mentioned conditions, with the purpose of evaluating its application to heat pumps/transformers. Polarization curves revealed the formation of a passive film, which under increased temperature changed its protective properties. The electrochemical noise results suggested that at the test temperatures the type of corrosion was mixed or pitting corrosion. The noise resistance was calculated through statistical analysis, and then, the Stern-Geary equation and Faraday law were applied to determine mass loss, which was compared to that obtained from weight loss method. Two localized corrosion indicators were also obtained: pitting index (PI) and the coefficient of variation of current (CV), which were compared each other and interrelated with the noise signals and visual observations. To support the type of corrosion process, scanning electron microscopy (SEM) coupled with energy dispersive X-ray analyzer (EDX) was used to study the surface morphology of the corroded specimens and for determining qualitative analyses.

KW - Current time series

KW - Electrochemical noise

KW - Pitting

KW - Resistance noise

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DO - 10.1016/j.msea.2006.07.078

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SN - 0921-5093

VL - 435-436

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EP - 446

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

ER -

Electrochemical noise analysis in the frequency domain and determination of corrosion rates for SS-304 stainless steel

Abstract

Bibliographical note

Keywords

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