Characterization of adsorption of 5-carboxy-3-amino-1,2,4-triazole towards copper corrosion prevention in neutral media
| Autor: | Yuri I. Kuznetsov, I. A. Arkhipushkin, Khidmet S. Shikhaliev, M. O. Agafonkina, Leonid P. Kazansky |
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| Rok vydání: | 2019 |
| Předmět: |
Open-circuit voltage
General Chemical Engineering Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Copper 0104 chemical sciences Anode Adsorption X-ray photoelectron spectroscopy chemistry Erosion corrosion of copper water tubes 0210 nano-technology Polarization (electrochemistry) |
| Zdroj: | Electrochimica Acta. 308:392-399 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2019.04.014 |
| Popis: | Adsorption behavior of 5-carboxy-3-amino-1,2,4-triazole (COOH-ATA) on copper in neutral (pH 7.4) borate buffer solutions with and without 0.01 M NaCl was studied. Electrochemical polarization methods show significant suppression of the anodic and cathodic currents on the polarization curves in the presence of COOH-ATA. Chronopotential diagrams show increase of open circuit potential during adsorption. Ellipsometric studies has allowed to estimate the free energy of adsorption. X-ray photoelectron spectroscopy was applied to examine the surface composition after COOH-ATA adsorption from the inhibitor solution. Spectra analysis shows oxidation of copper to Cu+ and Cu2+ with surface complex formation. Protective properties in humid air and salt fog chamber of such layer are discussed. |
| Databáze: | OpenAIRE |
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