Acoustic emission during pitting corrosion of 304 stainless steel |
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| Authors: | Jian Xu Xinqiang Wu En-Hou Han |
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| Affiliation: | State Key Laboratory for Corrosion and Protection, Liaoning Key Laboratory for Nuclear Material and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, 110016 Shenyang, PR China |
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| Abstract: | 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. |
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| Keywords: | A Acid solutions A Stainless steel B Polarization C Pitting corrosion |
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