2-Mercaptobenzoxazole as a copper corrosion inhibitor in chloride solution: Electrochemistry, 3D-profilometry,and XPS surface analysis |
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| Affiliation: | 1. University of Maribor, Faculty of Chemistry and Chemical Engineering (UM FKKT), Smetanova ulica 17, 2000 Maribor, Slovenia;2. Jo?ef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;1. Jo?ef Stefan Institute, Department of Physical and Organic Chemistry, Jamova 39, SI-1000 Ljubljana, Slovenia;2. Jo?ef Stefan Institute, Department of Surface Engineering and Optoelectronics, Jamova 39, SI-1000 Ljubljana, Slovenia |
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| Abstract: | 2-Mercaptobenzoxazole (MBOH) was studied as a corrosion inhibitor for Cu in 3 wt.% NaCl solution using EIS, a potentiodynamic curve, 3D-profilometry, and XPS measurements. It was shown that Cu corrosion in solution containing MBOH follows kinetic-controlled and diffusion-controlled processes and that MBOH is a mixed-type inhibitor. The diffusion coefficient of the Cu ions travelling through the solid surface layers was estimated to be on the order of 10?15–10?14 cm2 s?1. It was also demonstrated that the Cu(I)–MBOH complex is formed on the Cu surface and that the thickness of this surface layer is 1.4 ± 0.4 nm. |
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| Keywords: | A Copper B EIS B Polarisation B XPS C Neutral Inhibition C Interfaces |
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