Pitting Suppression of AISI 316 Stainless Steel Plates in Conditions of Ultrasonic Vibration
Plate heat exchangers are widespread type of equipment that suffers from pitting corrosion in chloride containing solutions. Anodic behaviour of AISI 316 stainless steel was tested in 3.5% NaCl solution in conditions of ultrasound vibration (27 kHz, 10 W). The potentiodynamic sweep, potentiostatic t...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/6697227 |
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| author | Georgii S. Vasyliev Oleg M. Kuzmenko |
| author_facet | Georgii S. Vasyliev Oleg M. Kuzmenko |
| author_sort | Georgii S. Vasyliev |
| collection | DOAJ |
| description | Plate heat exchangers are widespread type of equipment that suffers from pitting corrosion in chloride containing solutions. Anodic behaviour of AISI 316 stainless steel was tested in 3.5% NaCl solution in conditions of ultrasound vibration (27 kHz, 10 W). The potentiodynamic sweep, potentiostatic technique, and galvanostatic technique were used coupled with surface morphology investigation after polarization. The pitting potential increased from 0.26 ± 0.02 V/SSCE to 0.42 ± 0.05 V/SSCE, and repassivation potential increased from 0.03 ± 0.01 V/SSCE to 0.18 ± 0.04 V/SSCE when vibration was applied. The anodic current at applied potential in pitting region was two orders of magnitude lower in conditions of ultrasound vibration. A possible mechanism of vibration influence on pitting is proposed, which is the elimination of pit covers from the vibrating surface, vibration-induced electrolyte motion in and out of the pits, and repassivation of active metal inside the pits. |
| format | Article |
| id | doaj-art-f94b8d661f1946c39a391ab1630a0880 |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-f94b8d661f1946c39a391ab1630a08802025-02-03T05:57:19ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782020-01-01202010.1155/2020/66972276697227Pitting Suppression of AISI 316 Stainless Steel Plates in Conditions of Ultrasonic VibrationGeorgii S. Vasyliev0Oleg M. Kuzmenko1National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37 Prospect Peremohy, Kyiv 03056, UkraineNational Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37 Prospect Peremohy, Kyiv 03056, UkrainePlate heat exchangers are widespread type of equipment that suffers from pitting corrosion in chloride containing solutions. Anodic behaviour of AISI 316 stainless steel was tested in 3.5% NaCl solution in conditions of ultrasound vibration (27 kHz, 10 W). The potentiodynamic sweep, potentiostatic technique, and galvanostatic technique were used coupled with surface morphology investigation after polarization. The pitting potential increased from 0.26 ± 0.02 V/SSCE to 0.42 ± 0.05 V/SSCE, and repassivation potential increased from 0.03 ± 0.01 V/SSCE to 0.18 ± 0.04 V/SSCE when vibration was applied. The anodic current at applied potential in pitting region was two orders of magnitude lower in conditions of ultrasound vibration. A possible mechanism of vibration influence on pitting is proposed, which is the elimination of pit covers from the vibrating surface, vibration-induced electrolyte motion in and out of the pits, and repassivation of active metal inside the pits.http://dx.doi.org/10.1155/2020/6697227 |
| spellingShingle | Georgii S. Vasyliev Oleg M. Kuzmenko Pitting Suppression of AISI 316 Stainless Steel Plates in Conditions of Ultrasonic Vibration International Journal of Chemical Engineering |
| title | Pitting Suppression of AISI 316 Stainless Steel Plates in Conditions of Ultrasonic Vibration |
| title_full | Pitting Suppression of AISI 316 Stainless Steel Plates in Conditions of Ultrasonic Vibration |
| title_fullStr | Pitting Suppression of AISI 316 Stainless Steel Plates in Conditions of Ultrasonic Vibration |
| title_full_unstemmed | Pitting Suppression of AISI 316 Stainless Steel Plates in Conditions of Ultrasonic Vibration |
| title_short | Pitting Suppression of AISI 316 Stainless Steel Plates in Conditions of Ultrasonic Vibration |
| title_sort | pitting suppression of aisi 316 stainless steel plates in conditions of ultrasonic vibration |
| url | http://dx.doi.org/10.1155/2020/6697227 |
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