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In situ investigation of carbon steel corrosion by means of temporal series micrographs coupled with electrochemical techniques

Grant number: 11/19430-0
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): June 01, 2012
Effective date (End): May 31, 2015
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Ernesto Chaves Pereira de Souza
Grantee:Alexsandro Mendes Zimer
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil


This project presents the use of temporal series micrographs with an optical microscope coupled with electrochemical techniques to carbon steel corrosion study. This coupled technique will be used corrosion study of AISI 1020 and 1040, in a mixture of paraffin hydrocarbon emulsified with an aqueous solution containing sulfide and chloride ions and in aqueous oil extract Enlarge advantage of this solution coupling techniques is the preservation of coordinates the surface. Thus, it can be studied as many processes as those located generalized, as the grain boundary and pitting corrosion, monitoring the changes that occur locally. Finally, using these techniques in a consequence that was first described in our doctoral thesis in pitting corrosion is possible to estimate the depth of them, crossing the two-dimensional data (image) with the charge that passes during the faradaic dissolution located. The investigation of corrosion of steel will be performed by the measurements od open circuit potential, Eoc, polarization curves, CP, electrochemical impedance spectroscopy, EIS, in situ optical microscopy for metallic surface analysis.

Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RIOS, EMERSON C.; OLIVEIRA, ALOADIR L.; ZIMER, ALEXSANDRO M.; FREITAS, RENATO G.; MATOS, ROBERTO; PEREIRA, ERNESTO C.; MASCARO, LUCIA H. In situ characterization of naphthenic corrosion of API 5L X70 steel at room temperature. FUEL, v. 184, p. 648-655, NOV 15 2016. Web of Science Citations: 5.
DA SILVA, MARINA MEDINA; MASCARO, LUCIA HELENA; PEREIRA, ERNESTO CHAVES; ZIMER, ALEXSANDRO MENDES. Near-surface solution pH measurements during the pitting corrosion of AISI 1020 steel using a ring-shaped sensor. Journal of Electroanalytical Chemistry, v. 780, p. 379-385, NOV 1 2016. Web of Science Citations: 2.
ZIMER, ALEXSANDRO MENDES; MACHADO, MARIA MANUELA P.; DALLA COSTA JUNIOR, LAZARO JOSE; LEME IKE, PRISCILA TOMIE; IEMMA, MONICA R. C.; YAMAMOTO, CINTIA FUMI; FERREIRA, CAUE FAVERO; SOUZA, DULCE H. F.; DE OLIVEIRA, CAUE RIBEIRO; PEREIRA, ERNESTO CHAVES. Optimized Porous Anodic Alumina Membranes for Water Ultrafiltration of Pathogenic Bacteria (E. coli). Journal of Nanoscience and Nanotechnology, v. 16, n. 6, p. 6526-6534, JUN 2016. Web of Science Citations: 2.
ZIMER, ALEXSANDRO MENDES; DA SILVA, MARINA MEDINA; MACHADO, EDUARDO G.; VARELA, HAMILTON; MASCARO, LUCIA HELENA; PEREIRA, ERNESTO CHAVES. Development of a versatile rotating ring-disc electrode for in situ pH measurements. Analytica Chimica Acta, v. 897, p. 17-23, OCT 15 2015. Web of Science Citations: 3.
RIOS, EMERSON C.; ZIMER, ALEXSANDRO M.; MENDES, PAULO C. D.; FREITAS, MARCOS B. J.; DE CASTRO, EUSTAQUIO V. R.; MASCARO, LUCIA H.; PEREIRA, ERNESTO C. Corrosion of AISI 1020 steel in crude oil studied by the electrochemical noise measurements. FUEL, v. 150, p. 325-333, JUN 15 2015. Web of Science Citations: 13.
VAN DER WEEEN, PIETER; ZIMER, ALEXSANDRO M.; PEREIRA, ERNESTO C.; MASCARO, LUCIA H.; BRUNO, ODEMIR M.; DE BAETS, BERNARD. Modeling pitting corrosion by means of a 3D discrete stochastic model. Corrosion Science, v. 82, p. 133-144, MAY 2014. Web of Science Citations: 22.

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