Journal
CORROSION SCIENCE
Volume 52, Issue 1, Pages 187-197Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2009.09.001
Keywords
Acid solutions; Mild steel; Stainless steel; Potentiostatic; Passive films; Pitting corrosion
Funding
- The Thailand Research Fund
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Acoustic emission (AE) can be used to detect corrosion in various applications. In cases of severe background noise, good noise elimination techniques and source identification approaches are required to increase signal-to-noise ratio. In this paper, a new AE parameter is presented as an alternative to AE activity for classification of corrosion sources. The duration and frequency of AE signals are found to be helpful in identifying the source of pitting and uniform corrosion processes. Results are explained in terms of theories of corrosion mechanisms and AE, as well as using experiment results. Finally, new AE source-based approaches to monitor both corrosion processes are proposed. (C) 2009 Elsevier Ltd. All rights reserved.
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