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Proceedings Paper

Electrochemical noise analysis methods for the investigation of corrosion processes
Author(s): Janusz M. Smulko
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Paper Abstract

Electrochemical corrosion processes can be investigated by observation of the charge flow between electrolyte and the corroding metal. Usually, the charge flow is observed as spontaneous current and voltage fluctuations (electrochemical noise) in a three-electrode setup. Different types of corrosion processes can be recognized by electrochemical noise analysis. Uniform corrosion rate can be evaluated by estimation of polarization resistance between metal and electrolyte. Local corrosion events (breakdowns of the passive layer) that produce characteristic transients observed in noise can be detected. The different methods of electrochemical noise analysis are presented. The limitations and advantages of the method for corrosion monitoring and research are underlined. The experimental results are also discussed.

Paper Details

Date Published: 8 May 2003
PDF: 6 pages
Proc. SPIE 5115, Noise and Information in Nanoelectronics, Sensors, and Standards, (8 May 2003); doi: 10.1117/12.515263
Show Author Affiliations
Janusz M. Smulko, Dept. of Electrical Engineering, Texas A&M Univ. (United States)
Gdansk Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 5115:
Noise and Information in Nanoelectronics, Sensors, and Standards
Laszlo B. Kish; Frederick Green; Giuseppe Iannaccone; John R. Vig, Editor(s)

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