Journal
CORROSION SCIENCE
Volume 53, Issue 4, Pages 1537-1546Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.01.030
Keywords
Acid solutions; Stainless steel; Polarization; Pitting corrosion
Funding
- Science and Technology Foundation of China [50871113]
- Special Funds for the Major State Basic Research Projects [2011CB610505]
- Major Scientific and Technological Special Project [2010ZX06004-009]
- Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS)
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Acoustic emission (AE) during pitting corrosion of 304 stainless steel (304 SS) in H2SO4 solutions with different pH values and Cl- concentrations was studied. Two types of AE signals are detected in all solutions. Each type of signals is characterized by AE parameters (rise time, counts number, duration and amplitude) and waveform carefully. It is believed that the hydrogen bubbles evolution inside the pits is the AE source. (c) 2011 Elsevier Ltd. All rights reserved.
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