Thermogalvanic effects on the corrosion of copper in heavy brine LiBr solutions
| Autor: | Fernández Domene, Ramón Manuel, Blasco Tamarit, María Encarnación, García García, Dionisio Miguel, García Antón, José |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
EIS
Anodic dissolution Chemistry General Chemical Engineering Inorganic chemistry Metallurgy chemistry.chemical_element General Chemistry Copper Copper loss Cathode INGENIERIA QUIMICA Anode Corrosion Dielectric spectroscopy law.invention Electroquímica chemistry.chemical_compound Brine Bromide law General Materials Science Polarisation |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname Fernández Domene, Ramón Manuel Blasco-Tamarit, E. García-García, D.M. Garcia-Anton, Jose 2012 Thermogalvanic effects on the corrosion of copper in heavy brine LiBr solutions Corrosion Science 63 304 315 RODERIC. Repositorio Institucional de la Universitat de Valéncia RODERIC: Repositorio Institucional de la Universitat de Valéncia Universitat de València |
| DOI: | 10.1016/j.corsci.2012.06.012 |
| Popis: | Thermogalvanic corrosion of copper in heavy brine LiBr solutions has been investigated using a zero-resistance ammeter (ZRA). The temperature gradients between copper electrodes immersed in the same LiBr solution result in the formation of thermogalvanic cells with hot anodes, leading to high and sustained thermogalvanic currents. Copper loss rates, calculated using Faraday's law, substantially exceed 0.025mmyear -1, a value regarded as the threshold of low corrosion rates. The effects of thermogalvanic coupling on the surface properties of the anode and the cathode have been analysed by means of electrochemical impedance spectroscopy (EIS). The results obtained in this analysis have been related to the process of copper electrodissolution in bromide media. We wish express our gratitude to the Ministerio de Ciencia e Innovacion (Project CTQ2009-07518), for the economical support of this research and to Dr. M. Asuncion Jaime for her translation assistance. |
| Databáze: | OpenAIRE |
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