Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/44568
Title: Scanning microelectrochemical characterization of the anti-corrosion performance of inhibitor films formed by 2-mercaptobenzimidazole on copper
Authors: Izquierdo, Javier
Santana, Juan José 
González, Sergio
Souto, Ricardo M.
UNESCO Clasification: 3303 ingeniería y tecnología químicas
Keywords: Corrosion inhibition
Scanning electro chemical microscopy (SECM)
Scanning vibrating electrode technique (SVET)
Copper
Mercaptobenzimidazole (MBI)
Issue Date: 2012
Publisher: 0300-9440
Project: CTQ2009-12459/PPQ
Journal: Progress in Organic Coatings 
Abstract: The aim of this work is to explore the applicability of the scanning electrochemical microscope (SECM) to characterize the inhibiting effect of 2-mercaptobenzimidazole against the corrosion of copper. SECM was operated in the feedback mode by using ferrocene-methanol as redox mediator, and the sample was left unbiased at all times. The kinetic changes in the corrosion processes were monitored over time from the Z-approach curves. Furthermore, inhibitor-modified copper samples presenting various surface finishes were imaged by SECM and the scanning vibrating electrode technique (SVET), allowing changes both in the surface activity of metal-inhibitor films and in the extent of corrosion attack to be spatially resolved. Differences in the local electrochemical activity between inhibitor-free and inhibitor-covered areas of the sample were successfully monitored.
URI: http://hdl.handle.net/10553/44568
ISSN: 0300-9440
DOI: 10.1016/j.porgcoat.2012.01.019
Source: Progress In Organic Coatings[ISSN 0300-9440],v. 74 (3), p. 526-533
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