کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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693177 | 889869 | 2012 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Scanning microelectrochemical characterization of the anti-corrosion performance of inhibitor films formed by 2-mercaptobenzimidazole on copper Scanning microelectrochemical characterization of the anti-corrosion performance of inhibitor films formed by 2-mercaptobenzimidazole on copper](/preview/png/693177.png)
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.
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► Microelectrochemical monitoring of Cu corrosion inhibition by mercaptobenzimidazole.
► SECM approach curves used to monitor over time changes in the inhibitor layers formed.
► Activity of surface layers and extent of corrosion attack imaged by SECM and SVET.
► Thicker and more insulating films formed if chloride ions present in addition to MBI.
Journal: Progress in Organic Coatings - Volume 74, Issue 3, July 2012, Pages 526–533