Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement

Chinwuba Victor Ossia; Charles Ugochukwu Orji

doi:doi:10.11648/j.ijmea.20160402.16

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Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement

Chinwuba Victor Ossia, Charles Ugochukwu Orji

Published in International Journal of Mechanical Engineering and Applications (Volume 4, Issue 2)

Received: 13 April 2016 Accepted: 22 April 2016 Published: 7 May 2016

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Abstract

In this study, the susceptibility of aluminium (Al) and steel SS304 to pitting corrosion in FeCl₃ and NaCl solutions with varying pH values were investigated using electrochemical noise (ECN) measurement and Scanning Vibrating Electrode Technique (SVET). Preliminary surface drop test of SS304 in FeCl₃ solution and total immersion test of Al in NaCl solution indicated higher pitting of samples at scratches simulated by scribe. Total immersion test on both SS304 and Al indicated that protecting a sample with epoxy-resin mold does not completely eliminate crevice attack. ECN tests results showed that Al suffered severe time-variant corrosion in FeCl₃ solution unlike SS304. The results of SVET tests conducted after 24h immersion indicated that the early pits captured on Al samples were more intense than the later ones. Higher corrosion rates were obtained for samples in NaCl solution of pH 2.89 compared to pH 7.21, indicating that pitting increased with acidity. SVET maps obtained corroborated Scanning Electron Microscopy (SEM) images of the sampled surfaces. However, though SVET was unable to capture pitting of SS304 in the solutions, SEM image revealed pitting activity on the sample in FeCl₃ solution.

Published in	International Journal of Mechanical Engineering and Applications (Volume 4, Issue 2)
DOI	10.11648/j.ijmea.20160402.16
Page(s)	71-80
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2016. Published by Science Publishing Group

Keywords

Scanning Vibrating Electrode Technique (SVET), Electrochemical Noise (ECN), Coefficient of Variation (CoV)

References

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APA Style

Chinwuba Victor Ossia, Charles Ugochukwu Orji. (2016). Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement. International Journal of Mechanical Engineering and Applications, 4(2), 71-80. https://doi.org/10.11648/j.ijmea.20160402.16

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ACS Style

Chinwuba Victor Ossia; Charles Ugochukwu Orji. Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement. Int. J. Mech. Eng. Appl. 2016, 4(2), 71-80. doi: 10.11648/j.ijmea.20160402.16

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AMA Style

Chinwuba Victor Ossia, Charles Ugochukwu Orji. Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement. Int J Mech Eng Appl. 2016;4(2):71-80. doi: 10.11648/j.ijmea.20160402.16

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@article{10.11648/j.ijmea.20160402.16,
  author = {Chinwuba Victor Ossia and Charles Ugochukwu Orji},
  title = {Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement},
  journal = {International Journal of Mechanical Engineering and Applications},
  volume = {4},
  number = {2},
  pages = {71-80},
  doi = {10.11648/j.ijmea.20160402.16},
  url = {https://doi.org/10.11648/j.ijmea.20160402.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20160402.16},
  abstract = {In this study, the susceptibility of aluminium (Al) and steel SS304 to pitting corrosion in FeCl3 and NaCl solutions with varying pH values were investigated using electrochemical noise (ECN) measurement and Scanning Vibrating Electrode Technique (SVET). Preliminary surface drop test of SS304 in FeCl3 solution and total immersion test of Al in NaCl solution indicated higher pitting of samples at scratches simulated by scribe. Total immersion test on both SS304 and Al indicated that protecting a sample with epoxy-resin mold does not completely eliminate crevice attack. ECN tests results showed that Al suffered severe time-variant corrosion in FeCl3 solution unlike SS304. The results of SVET tests conducted after 24h immersion indicated that the early pits captured on Al samples were more intense than the later ones. Higher corrosion rates were obtained for samples in NaCl solution of pH 2.89 compared to pH 7.21, indicating that pitting increased with acidity. SVET maps obtained corroborated Scanning Electron Microscopy (SEM) images of the sampled surfaces. However, though SVET was unable to capture pitting of SS304 in the solutions, SEM image revealed pitting activity on the sample in FeCl3 solution.},
 year = {2016}
}

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TY  - JOUR
T1  - Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement
AU  - Chinwuba Victor Ossia
AU  - Charles Ugochukwu Orji
Y1  - 2016/05/07
PY  - 2016
N1  - https://doi.org/10.11648/j.ijmea.20160402.16
DO  - 10.11648/j.ijmea.20160402.16
T2  - International Journal of Mechanical Engineering and Applications
JF  - International Journal of Mechanical Engineering and Applications
JO  - International Journal of Mechanical Engineering and Applications
SP  - 71
EP  - 80
PB  - Science Publishing Group
SN  - 2330-0248
UR  - https://doi.org/10.11648/j.ijmea.20160402.16
AB  - In this study, the susceptibility of aluminium (Al) and steel SS304 to pitting corrosion in FeCl3 and NaCl solutions with varying pH values were investigated using electrochemical noise (ECN) measurement and Scanning Vibrating Electrode Technique (SVET). Preliminary surface drop test of SS304 in FeCl3 solution and total immersion test of Al in NaCl solution indicated higher pitting of samples at scratches simulated by scribe. Total immersion test on both SS304 and Al indicated that protecting a sample with epoxy-resin mold does not completely eliminate crevice attack. ECN tests results showed that Al suffered severe time-variant corrosion in FeCl3 solution unlike SS304. The results of SVET tests conducted after 24h immersion indicated that the early pits captured on Al samples were more intense than the later ones. Higher corrosion rates were obtained for samples in NaCl solution of pH 2.89 compared to pH 7.21, indicating that pitting increased with acidity. SVET maps obtained corroborated Scanning Electron Microscopy (SEM) images of the sampled surfaces. However, though SVET was unable to capture pitting of SS304 in the solutions, SEM image revealed pitting activity on the sample in FeCl3 solution.
VL  - 4
IS  - 2
ER  -

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Author Information

Chinwuba Victor Ossia

Offshore Technology Institute, Graduate School of Engineering & Technology, University of Port Harcourt, Port Harcourt, Nigeria
Charles Ugochukwu Orji

Offshore & Hydrodynamics Group, School of Marine Science & Technology, Newcastle University, Newcastle-Upon-Tyne, United Kingdom

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APA Style

Chinwuba Victor Ossia, Charles Ugochukwu Orji. (2016). Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement. International Journal of Mechanical Engineering and Applications, 4(2), 71-80. https://doi.org/10.11648/j.ijmea.20160402.16

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ACS Style

Chinwuba Victor Ossia; Charles Ugochukwu Orji. Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement. Int. J. Mech. Eng. Appl. 2016, 4(2), 71-80. doi: 10.11648/j.ijmea.20160402.16

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AMA Style

Chinwuba Victor Ossia, Charles Ugochukwu Orji. Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement. Int J Mech Eng Appl. 2016;4(2):71-80. doi: 10.11648/j.ijmea.20160402.16

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@article{10.11648/j.ijmea.20160402.16,
  author = {Chinwuba Victor Ossia and Charles Ugochukwu Orji},
  title = {Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement},
  journal = {International Journal of Mechanical Engineering and Applications},
  volume = {4},
  number = {2},
  pages = {71-80},
  doi = {10.11648/j.ijmea.20160402.16},
  url = {https://doi.org/10.11648/j.ijmea.20160402.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20160402.16},
  abstract = {In this study, the susceptibility of aluminium (Al) and steel SS304 to pitting corrosion in FeCl3 and NaCl solutions with varying pH values were investigated using electrochemical noise (ECN) measurement and Scanning Vibrating Electrode Technique (SVET). Preliminary surface drop test of SS304 in FeCl3 solution and total immersion test of Al in NaCl solution indicated higher pitting of samples at scratches simulated by scribe. Total immersion test on both SS304 and Al indicated that protecting a sample with epoxy-resin mold does not completely eliminate crevice attack. ECN tests results showed that Al suffered severe time-variant corrosion in FeCl3 solution unlike SS304. The results of SVET tests conducted after 24h immersion indicated that the early pits captured on Al samples were more intense than the later ones. Higher corrosion rates were obtained for samples in NaCl solution of pH 2.89 compared to pH 7.21, indicating that pitting increased with acidity. SVET maps obtained corroborated Scanning Electron Microscopy (SEM) images of the sampled surfaces. However, though SVET was unable to capture pitting of SS304 in the solutions, SEM image revealed pitting activity on the sample in FeCl3 solution.},
 year = {2016}
}

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TY  - JOUR
T1  - Investigating Pitting Corrosion of Stainless Steel and Aluminium Using Scanning Vibrating Electrode Techniques and Electrochemical Noise Measurement
AU  - Chinwuba Victor Ossia
AU  - Charles Ugochukwu Orji
Y1  - 2016/05/07
PY  - 2016
N1  - https://doi.org/10.11648/j.ijmea.20160402.16
DO  - 10.11648/j.ijmea.20160402.16
T2  - International Journal of Mechanical Engineering and Applications
JF  - International Journal of Mechanical Engineering and Applications
JO  - International Journal of Mechanical Engineering and Applications
SP  - 71
EP  - 80
PB  - Science Publishing Group
SN  - 2330-0248
UR  - https://doi.org/10.11648/j.ijmea.20160402.16
AB  - In this study, the susceptibility of aluminium (Al) and steel SS304 to pitting corrosion in FeCl3 and NaCl solutions with varying pH values were investigated using electrochemical noise (ECN) measurement and Scanning Vibrating Electrode Technique (SVET). Preliminary surface drop test of SS304 in FeCl3 solution and total immersion test of Al in NaCl solution indicated higher pitting of samples at scratches simulated by scribe. Total immersion test on both SS304 and Al indicated that protecting a sample with epoxy-resin mold does not completely eliminate crevice attack. ECN tests results showed that Al suffered severe time-variant corrosion in FeCl3 solution unlike SS304. The results of SVET tests conducted after 24h immersion indicated that the early pits captured on Al samples were more intense than the later ones. Higher corrosion rates were obtained for samples in NaCl solution of pH 2.89 compared to pH 7.21, indicating that pitting increased with acidity. SVET maps obtained corroborated Scanning Electron Microscopy (SEM) images of the sampled surfaces. However, though SVET was unable to capture pitting of SS304 in the solutions, SEM image revealed pitting activity on the sample in FeCl3 solution.
VL  - 4
IS  - 2
ER  -

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